diff --git a/app/controllers/api/v1/project_topics_controller.rb b/app/controllers/api/v1/project_topics_controller.rb
new file mode 100644
index 000000000..5d353fbf4
--- /dev/null
+++ b/app/controllers/api/v1/project_topics_controller.rb
@@ -0,0 +1,46 @@
+class Api::V1::ProjectTopicsController < Api::V1::BaseController 
+
+  def index 
+    @project_topics = ProjectTopic
+    @project_topics = @project_topics.ransack(name_cont: params[:keyword]) if params[:keyword].present?
+    @project_topics = @project_topics.includes(:projects)
+    @project_topics = kaminary_select_paginate(@project_topics)
+  end
+
+  def create 
+    ActiveRecord::Base.transaction do 
+      @project = Project.find_by_id(create_params[:project_id])
+      return render_not_found unless @project.present?
+      return render_error("请输入项目搜索标签名称.") unless create_params[:name].present? 
+      
+      @project_topic = ProjectTopic.find_or_create_by!(name: create_params[:name].downcase)
+      @project_topic_ralate = @project_topic.project_topic_ralates.find_or_create_by!(project_id: create_params[:project_id])
+
+      if @project_topic.present? && @project_topic_ralate.present? 
+        render_ok
+      else 
+        render_error("项目关联搜索标签失败.")
+      end
+    end
+  end
+
+  def destroy 
+    ActiveRecord::Base.transaction do 
+      @project = Project.find_by_id(create_params[:project_id])
+      return render_not_found unless @project.present?
+
+      @project_topic = ProjectTopic.find_by_id(params[:id])
+      @project_topic_ralate = @project_topic.project_topic_ralates.find_by(project_id: @project.id)
+      if @project_topic_ralate.destroy! 
+        render_ok 
+      else 
+        render_error("项目取消关联搜索标签失败.")
+      end
+    end
+  end
+
+  private 
+  def create_params
+    params.permit(:project_id, :name)
+  end
+end
\ No newline at end of file
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index a3ab7c879..a2d6ad618 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -34,7 +34,7 @@ class ProjectsController < ApplicationController
   def index
     scope = current_user.logged? ? Projects::ListQuery.call(params, current_user.id) : Projects::ListQuery.call(params)
 
-    @projects = kaminari_paginate(scope.includes(:project_category, :project_language, :repository, :project_educoder, :owner, :project_units))
+    @projects = kaminari_paginate(scope.includes(:project_category, :project_language, :repository, :project_educoder, :owner, :project_units, :project_topics))
     # @projects = paginate scope.includes(:project_category, :project_language, :repository, :project_educoder, :owner, :project_units)
 
     category_id = params[:category_id]
@@ -130,6 +130,13 @@ class ProjectsController < ApplicationController
       # TODO:
       # 临时特殊处理修改website、lesson_url操作方法
       if project_params.has_key?("website") 
+        if params[:project_topic_names].present? && params[:project_topic_names].is_a?(Array)
+          ProjectTopicRalate.where(project: @project).destroy_all
+          params[:project_topic_names].each do |name|
+            project_topic = ProjectTopic.find_or_create_by!(name: name.downcase)
+            project_topic.project_topic_ralates.find_or_create_by!(project: @project)
+          end
+        end
         @project.update(project_params)
       elsif project_params.has_key?("default_branch")
         @project.update(project_params)
diff --git a/app/models/concerns/matchable.rb b/app/models/concerns/matchable.rb
index 5c013f951..0640e7c74 100644
--- a/app/models/concerns/matchable.rb
+++ b/app/models/concerns/matchable.rb
@@ -6,6 +6,7 @@ module Matchable
     scope :with_project_language, ->(language_id) { where(project_language_id: language_id) unless language_id.blank? }
     scope :with_project_type,     ->(project_type) { where(project_type: project_type) if Project.project_types.include?(project_type) }
     scope :by_name_or_identifier, ->(search) { where("name like :search or identifier LIKE :search", :search => "%#{search.split(" ").join('|')}%") unless search.blank? }
+    scope :with_project_topic, ->(topic_id) {joins(:project_topics).where(project_topics: {id: topic_id}) unless topic_id.blank?}
   end
 
 end
diff --git a/app/models/project.rb b/app/models/project.rb
index 4a356cbc7..f08daae9e 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -126,6 +126,8 @@ class Project < ApplicationRecord
   has_many :webhooks, class_name: "Gitea::Webhook", primary_key: :gpid, foreign_key: :repo_id
   has_many :user_trace_tasks, dependent: :destroy 
   has_many :project_invite_links, dependent: :destroy
+  has_many :project_topic_ralates, dependent: :destroy 
+  has_many :project_topics, through: :project_topic_ralates
   after_create :incre_user_statistic, :incre_platform_statistic
   after_save :check_project_members
   before_save :set_invite_code, :reset_unmember_followed, :set_recommend_and_is_pinned, :reset_cache_data
diff --git a/app/models/project_topic.rb b/app/models/project_topic.rb
new file mode 100644
index 000000000..94c9df9c7
--- /dev/null
+++ b/app/models/project_topic.rb
@@ -0,0 +1,25 @@
+# == Schema Information
+#
+# Table name: project_topics
+#
+#  id             :integer          not null, primary key
+#  user_id        :integer
+#  name           :string(255)
+#  position       :integer          default("0")
+#  projects_count :integer          default("0")
+#  created_at     :datetime         not null
+#  updated_at     :datetime         not null
+#
+# Indexes
+#
+#  index_project_topics_on_user_id  (user_id)
+#
+
+class ProjectTopic < ApplicationRecord
+
+  belongs_to :user, optional: true
+  has_many :project_topic_ralates, dependent: :destroy
+  has_many :projects, through: :project_topic_ralates
+
+  validates :name, uniqueness: { case_sensitive: false }
+end
diff --git a/app/models/project_topic_ralate.rb b/app/models/project_topic_ralate.rb
new file mode 100644
index 000000000..d8638699f
--- /dev/null
+++ b/app/models/project_topic_ralate.rb
@@ -0,0 +1,22 @@
+# == Schema Information
+#
+# Table name: project_topic_ralates
+#
+#  id               :integer          not null, primary key
+#  project_topic_id :integer
+#  project_id       :integer
+#  created_at       :datetime         not null
+#  updated_at       :datetime         not null
+#
+# Indexes
+#
+#  index_project_topic_ralates_on_project_id        (project_id)
+#  index_project_topic_ralates_on_project_topic_id  (project_topic_id)
+#
+
+class ProjectTopicRalate < ApplicationRecord
+
+  belongs_to :project_topic, counter_cache: :projects_count
+  belongs_to :project  
+
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 8801cd58d..5b6a3df44 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -182,6 +182,7 @@ class User < Owner
   has_many :assigned_issues, through: :issue_assigners, source: :issue
   has_many :issue_participants, foreign_key: :participant_id 
   has_many :participant_issues, through: :issue_participants, source: :issue
+  has_many :project_topics
   # Groups and active users
   scope :active, lambda { where(status: [STATUS_ACTIVE, STATUS_EDIT_INFO]) }
   scope :like, lambda { |keywords|
diff --git a/app/queries/projects/list_my_query.rb b/app/queries/projects/list_my_query.rb
index 10f528881..27415543d 100644
--- a/app/queries/projects/list_my_query.rb
+++ b/app/queries/projects/list_my_query.rb
@@ -67,7 +67,7 @@ class Projects::ListMyQuery < ApplicationQuery
     keywords = params[:search].to_s.each_char.select { |c| c.bytes.first < 240 }.join('')
     q = projects.ransack(name_or_identifier_cont: keywords)
 
-    scope = q.result.includes(:project_category, :project_language,:owner, :repository, :has_pinned_users)
+    scope = q.result.includes(:project_category, :project_language,:owner, :repository, :has_pinned_users, :project_topics)
 
     sort = Project.column_names.include?(params[:sort_by]) ? params[:sort_by] : "updated_on"
     sort_direction = %w(desc asc).include?(params[:sort_direction]) ? params[:sort_direction] : "desc"
diff --git a/app/queries/projects/list_query.rb b/app/queries/projects/list_query.rb
index 2b048bd87..72776f7a2 100644
--- a/app/queries/projects/list_query.rb
+++ b/app/queries/projects/list_query.rb
@@ -3,7 +3,7 @@ class Projects::ListQuery < ApplicationQuery
 
   attr_reader :params, :current_user_id
 
-  sort_columns :updated_on, :created_on, :forked_count, :praises_count, default_by: :updated_on, default_direction: :desc
+  sort_columns :updated_on, :created_on, :forked_count, :praises_count, default_by: :updated_on, default_direction: :desc, default_table: 'projects'
 
   def initialize(params, current_user_id=nil)
     @params = params
@@ -32,6 +32,7 @@ class Projects::ListQuery < ApplicationQuery
     collection = by_project_type(collection)
     collection = by_project_category(collection)
     collection = by_project_language(collection)
+    collection = by_project_topic(collection)
     collection 
   end
 
@@ -74,6 +75,10 @@ class Projects::ListQuery < ApplicationQuery
     (params[:pinned].present? && params[:category_id].present?) ? items.pinned : items
   end
 
+  def by_project_topic(items)
+    items.with_project_topic(params[:topic_id])
+  end
+
   # 优化排序
   def optimize_sorting(relations, sort_by)
     if sort_by == "updated_on"
diff --git a/app/views/api/v1/project_topics/index.json.jbuilder b/app/views/api/v1/project_topics/index.json.jbuilder
new file mode 100644
index 000000000..5a39aaa56
--- /dev/null
+++ b/app/views/api/v1/project_topics/index.json.jbuilder
@@ -0,0 +1,4 @@
+json.total_count @project_topics.total_count
+json.project_topics @project_topics.each do |topic| 
+  json.(topic, :id, :name, :projects_count)
+end
\ No newline at end of file
diff --git a/app/views/projects/_project_detail.json.jbuilder b/app/views/projects/_project_detail.json.jbuilder
index c9e03fa22..c5b071abf 100644
--- a/app/views/projects/_project_detail.json.jbuilder
+++ b/app/views/projects/_project_detail.json.jbuilder
@@ -50,3 +50,6 @@ json.language do
     json.name project.project_language.name
   end
 end
+json.topics project.project_topics.each do |topic| 
+  json.(topic, :id, :name)
+end
\ No newline at end of file
diff --git a/app/views/projects/index.json.jbuilder b/app/views/projects/index.json.jbuilder
index 31d0db9c5..d3b96ab18 100644
--- a/app/views/projects/index.json.jbuilder
+++ b/app/views/projects/index.json.jbuilder
@@ -48,4 +48,7 @@ json.projects @projects do |project|
       json.name project.project_language.name
     end
   end
+  json.topics project.project_topics.each do |topic| 
+    json.(topic, :id, :name)
+  end
 end
diff --git a/app/views/projects/update.json.jbuilder b/app/views/projects/update.json.jbuilder
index 01e70377e..3dd8c3cda 100644
--- a/app/views/projects/update.json.jbuilder
+++ b/app/views/projects/update.json.jbuilder
@@ -6,4 +6,7 @@ json.project_category_id @project.project_category_id
 json.project_language_id @project.project_language_id
 json.is_public @project.is_public
 json.website @project.website
-json.lesson_url @project.lesson_url
\ No newline at end of file
+json.lesson_url @project.lesson_url
+json.topics @project.project_topics.each do |topic| 
+  json.(topic, :id, :name)
+end
\ No newline at end of file
diff --git a/app/views/repositories/detail.json.jbuilder b/app/views/repositories/detail.json.jbuilder
index 508d4c658..1164f4030 100644
--- a/app/views/repositories/detail.json.jbuilder
+++ b/app/views/repositories/detail.json.jbuilder
@@ -21,6 +21,9 @@ json.mirror_url @project&.repository.remote_mirror_url
 json.mirror @project&.repository.mirror_url.present?
 json.type @project.numerical_for_project_type
 json.open_devops @project.open_devops?
+json.topics @project.project_topics.each do |topic| 
+  json.(topic, :id, :name)
+end
 
 unless @project.common?
   json.mirror_status @repository.mirror_status
diff --git a/config/routes/api.rb b/config/routes/api.rb
index f39fa76c5..0a02065e2 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -2,7 +2,7 @@ defaults format: :json do
   namespace :api do 
     namespace :v1 do 
       scope ':owner' do 
-        resource :users, path: '/', only: [:show, :update, :edit, :destroy] do 
+        resource :users, path: '/', only: [:update, :edit, :destroy] do 
           collection do
             get :send_email_vefify_code
             post :check_password 
@@ -20,7 +20,7 @@ defaults format: :json do
 
         scope ':repo', constraints: { repo: /[^\/]+/ }  do 
           # projects
-          resource :projects, path: '/', only: [:show, :update, :edit, :destroy] do 
+          resource :projects, path: '/', only: [:show, :update, :edit] do 
             collection do 
               get :compare
               get :blame
@@ -97,6 +97,7 @@ defaults format: :json do
       end
 
       resources :projects, only: [:index]
+      resources :project_topics, only: [:index, :create, :destroy]
 
       
     end
diff --git a/db/migrate/20230321022108_create_project_topics.rb b/db/migrate/20230321022108_create_project_topics.rb
new file mode 100644
index 000000000..07a03e20d
--- /dev/null
+++ b/db/migrate/20230321022108_create_project_topics.rb
@@ -0,0 +1,19 @@
+class CreateProjectTopics < ActiveRecord::Migration[5.2]
+  def change
+    create_table :project_topics do |t|
+      t.references :user 
+      t.string :name 
+      t.integer :position, default: 0
+      t.integer :projects_count, default: 0
+
+      t.timestamps
+    end
+
+    create_table :project_topic_ralates do |t|
+      t.belongs_to :project_topic, index: true 
+      t.belongs_to :project, index: true 
+
+      t.timestamps
+    end
+  end
+end