diff --git a/app/controllers/api/v1/issues_controller.rb b/app/controllers/api/v1/issues_controller.rb
index d07807202..96cc23f3d 100644
--- a/app/controllers/api/v1/issues_controller.rb
+++ b/app/controllers/api/v1/issues_controller.rb
@@ -92,6 +92,7 @@ class Api::V1::IssuesController < Api::V1::BaseController
       :keyword, :author_id, 
       :milestone_id, :assigner_id,
       :status_id, 
+      :begin_date, :end_date,
       :sort_by, :sort_direction, 
       :issue_tag_ids)
   end
diff --git a/app/controllers/claims_controller.rb b/app/controllers/claims_controller.rb
index d9959bafd..9132f823f 100644
--- a/app/controllers/claims_controller.rb
+++ b/app/controllers/claims_controller.rb
@@ -39,6 +39,7 @@ class ClaimsController < ApplicationController
 
                 journal = Journal.new(journal_params)
                 if journal.save
+                    SendTemplateMessageJob.perform_later('IssueClaim', current_user.id, @issue&.id) 
                     render file: 'app/views/claims/list.json.jbuilder'
                 else
                     normal_status(-1,"新建声明关联评论操作失败")
diff --git a/app/controllers/installations_controller.rb b/app/controllers/installations_controller.rb
index 3379af47c..d299f6710 100644
--- a/app/controllers/installations_controller.rb
+++ b/app/controllers/installations_controller.rb
@@ -37,7 +37,7 @@ class InstallationsController < ApplicationController
         # 注册bot对应oauth应用
         Doorkeeper::Application.create!(name: @bot.name, uid: @bot.client_id, secret: @bot.client_secret, redirect_uri: "https://gitlink.org.cn")
         # 注册bot对应用户
-        result = autologin_register(User.generate_user_login('b'), nil, "#{SecureRandom.hex(6)}", 'bot', nil, nickname: @bot.name)
+        result = autologin_register(User.generate_user_login('b'), nil, "#{SecureRandom.hex(6)}", 'bot', nil, @bot.name)
         tip_exception(-1, result[:message]) if result[:message].present?
         @bot.uid = result[:user][:id]
         @bot.save
diff --git a/app/jobs/send_template_message_job.rb b/app/jobs/send_template_message_job.rb
index c40a3c9bd..05572d451 100644
--- a/app/jobs/send_template_message_job.rb
+++ b/app/jobs/send_template_message_job.rb
@@ -56,13 +56,21 @@ class SendTemplateMessageJob < ApplicationJob
       operator = User.find_by_id(operator_id)
       issue = Issue.find_by_id(issue_id)
       return unless operator.present? && issue.present?
-      receivers = User.where(id: issue.assigners.pluck(:id).append(issue&.author_id)).where.not(id: operator&.id)
+      receivers = User.where(id: (issue.assigners.pluck(:id).append(issue&.author_id) + issue.claim_users.pluck(:id)).uniq).where.not(id: operator&.id)
       receivers_string, content, notification_url = MessageTemplate::IssueChanged.get_message_content(receivers, operator, issue, change_params.symbolize_keys)
       Notice::Write::CreateService.call(receivers_string, content, notification_url, source, {operator_id: operator.id, issue_id: issue.id, change_params: change_params.symbolize_keys})
       receivers.find_each do |receiver|
         receivers_email_string, email_title, email_content = MessageTemplate::IssueChanged.get_email_message_content(receiver, operator, issue, change_params)
         Notice::Write::EmailCreateService.call(receivers_email_string, email_title, email_content)
       end
+    when 'IssueClaim'
+      operator_id, issue_id = args[0], args[1] 
+      operator = User.find_by_id(operator_id)
+      issue = Issue.find_by_id(issue_id)
+      return unless operator.present? && issue.present? 
+      receivers = User.where(id: issue.claim_users.pluck(:id).append(issue.author_id)).where.not(id: operator&.id)
+      receivers_string, content, notification_url = MessageTemplate::IssueClaim.get_message_content(receivers, operator, issue)
+      Notice::Write::CreateService.call(receivers_string, content, notification_url, source, {operator_id: operator.id, issue_id: issue.id})
     when 'IssueExpire'
       issue_id = args[0]
       issue = Issue.find_by_id(issue_id)
diff --git a/app/models/claim.rb b/app/models/claim.rb
index 963b5f55a..25f333e3e 100644
--- a/app/models/claim.rb
+++ b/app/models/claim.rb
@@ -17,5 +17,6 @@
 
 class Claim < ApplicationRecord
     belongs_to :user, foreign_key: :user_id
+    belongs_to :issue
     scope :claim_includes, ->{includes(:user)}
 end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 0fb5291e0..05475ac9c 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -65,6 +65,7 @@ class Issue < ApplicationRecord
   has_many :journals, :as => :journalized, :dependent => :destroy
   has_many :journal_details, through: :journals
   has_many :claims, :dependent => :destroy
+  has_many :claim_users, through: :claims, source: :user
   has_many :issue_tags_relates, dependent: :destroy
   has_many :issue_tags, through: :issue_tags_relates
   has_many :issue_times, dependent: :destroy
diff --git a/app/models/issue_tag.rb b/app/models/issue_tag.rb
index c6b6af8aa..ad6a82763 100644
--- a/app/models/issue_tag.rb
+++ b/app/models/issue_tag.rb
@@ -30,9 +30,9 @@ class IssueTag < ApplicationRecord
 
   def self.init_data(project_id)
     data = [
-      ["缺陷", "表示项目存在问题", "#d92d4c"],
+      ["缺陷", "表示存在意外问题或错误", "#d92d4c"],
       ["功能", "表示新功能申请", "#ee955a"],
-      ["疑问", "表示存在的问题", "#2d6ddc"],
+      ["疑问", "表示存在疑惑", "#2d6ddc"],
       ["支持", "表示特定功能或特定需求", "#019549"],
       ["任务", "表示需要分配的任务", "#c1a30d"],
       ["协助", "表示需要社区用户协助", "#2a0dc1"],
diff --git a/app/models/journal.rb b/app/models/journal.rb
index a789f28cd..5f56b6f78 100644
--- a/app/models/journal.rb
+++ b/app/models/journal.rb
@@ -82,8 +82,8 @@ class Journal < ApplicationRecord
         content += "将标记由<b>#{old_value}</b>更改为<b>#{new_value}</b>"
       end
     when 'assigner'
-      old_value = User.where(id: detail.old_value.split(",")).pluck(:nickname).join("、")
-      new_value = User.where(id: detail.value.split(",")).pluck(:nickname).join("、")
+      old_value = User.where(id: detail.old_value.split(",")).map{|u| u.real_name}.join("、")
+      new_value = User.where(id: detail.value.split(",")).map{|u| u.real_name}.join("、")
       if old_value.nil? || old_value.blank? 
         content += "添加负责人<b>#{new_value}</b>"
       else 
@@ -121,6 +121,10 @@ class Journal < ApplicationRecord
         old_value = detail.old_value 
         new_value = detail.value 
         content += "结束日期"
+      when 'assigned_to_id'
+        old_value = User.find_by_id(detail.old_value)&.real_name
+        new_value = User.find_by_id(detail.value)&.real_name
+        content += "负责人"
       end
       if old_value.nil? || old_value.blank? 
         content += "设置为<b>#{new_value}</b>"
diff --git a/app/models/message_template.rb b/app/models/message_template.rb
index 200c2f676..7ab7fdad8 100644
--- a/app/models/message_template.rb
+++ b/app/models/message_template.rb
@@ -24,6 +24,7 @@ class MessageTemplate < ApplicationRecord
     self.create(type: 'MessageTemplate::IssueAtme', sys_notice: '<b>{nickname}</b> 在疑修 <b>{title}</b> 中@我', notification_url: '{baseurl}/{owner}/{identifier}/issues/{id}')
     email_html = File.read("#{email_template_html_dir}/issue_changed.html")
     self.create(type: 'MessageTemplate::IssueChanged', sys_notice: '在项目 <b>{nickname2}/{repository}</b> 的疑修 <b>{title}</b> 中：{ifassigner}{nickname1}将负责人从 <b>{assigner1}</b> 修改为 <b>{assigner2}</b> {endassigner}{ifstatus}{nickname1}将状态从 <b>{status1}</b> 修改为 <b>{status2}</b> {endstatus}{iftracker}{nickname1}将类型从 <b>{tracker1}</b> 修改为 <b>{tracker2}</b> {endtracker}{ifpriority}{nickname1}将优先级从 <b>{priority1}</b> 修改为 <b>{priority2}</b> {endpriority}{ifmilestone}{nickname1}将里程碑从 <b>{milestone1}</b> 修改为 <b>{milestone2}</b> {endmilestone}{iftag}{nickname1}将标记从 <b>{tag1}</b> 修改为 <b>{tag2}</b> {endtag}{ifdoneratio}{nickname1}将完成度从 <b>{doneratio1}</b> 修改为 <b>{doneratio2}</b> {enddoneratio}{ifbranch}{nickname1}将指定分支从 <b>{branch1}</b> 修改为 <b>{branch2}</b> {endbranch}{ifstartdate}{nickname1}将开始日期从 <b>{startdate1}</b> 修改为 <b>{startdate2}</b> {endstartdate}{ifduedate}{nickname1}将结束日期从 <b>{duedate1}</b> 修改为 <b>{duedate2}</b> {endduedate}', email: email_html, email_title: "#{PLATFORM}: 疑修 {title} 有状态变更", notification_url: '{baseurl}/{owner}/{identifier}/issues/{id}')
+    self.create(type: 'MessageTemplate::IssueClaim', sys_notice: '在 <b>{nickname2}/{repository}</b> 的疑修 <b>{title}</b> 中, <b>{nickname1}</b> 新建了一条声明', notification_url: '{baseurl}/{owner}/{identifier}/issues/{id}')
     email_html = File.read("#{email_template_html_dir}/issue_expire.html")
     self.create(type: 'MessageTemplate::IssueExpire', sys_notice: '疑修 <b>{title}</b> 已临近截止日期，请尽快处理', notification_url: '{baseurl}/{owner}/{identifier}/issues/{id}', email: email_html, email_title: "#{PLATFORM}: 疑修截止日期到达最后一天")
     email_html = File.read("#{email_template_html_dir}/issue_deleted.html")
diff --git a/app/models/message_template/issue_claim.rb b/app/models/message_template/issue_claim.rb
new file mode 100644
index 000000000..0a7b6e4e0
--- /dev/null
+++ b/app/models/message_template/issue_claim.rb
@@ -0,0 +1,31 @@
+# == Schema Information
+#
+# Table name: message_templates
+#
+#  id               :integer          not null, primary key
+#  type             :string(255)
+#  sys_notice       :text(65535)
+#  email            :text(65535)
+#  created_at       :datetime         not null
+#  updated_at       :datetime         not null
+#  notification_url :string(255)
+#  email_title      :string(255)
+#
+
+# 在疑修中创建声明
+class MessageTemplate::IssueClaim < MessageTemplate 
+
+  # MessageTemplate::IssueAtme.get_message_content(User.where(login: 'yystopf'), User.last, Issue.last)
+  def self.get_message_content(receivers, operator, issue)
+    return '', '', '' if receivers.blank?
+    project = issue&.project 
+    owner = project&.owner 
+    content = sys_notice.gsub('{nickname1}', operator&.real_name).gsub('{nickname2}', owner&.real_name).gsub('{repository}', project&.name).gsub('{title}', issue&.subject)
+    url = notification_url.gsub('{owner}', owner&.login).gsub('{identifier}', project&.identifier).gsub('{id}', issue&.project_issues_index.to_s)
+
+    return receivers_string(receivers), content, url
+  rescue => e
+    Rails.logger.info("MessageTemplate::IssueClaim.get_message_content [ERROR] #{e}")
+    return 0, '', ''
+  end
+end
diff --git a/app/services/api/v1/issues/list_service.rb b/app/services/api/v1/issues/list_service.rb
index faf1c1c31..e5eff6c48 100644
--- a/app/services/api/v1/issues/list_service.rb
+++ b/app/services/api/v1/issues/list_service.rb
@@ -2,6 +2,7 @@ class Api::V1::Issues::ListService < ApplicationService
   include ActiveModel::Model
 
   attr_reader :project, :only_name, :category, :participant_category, :keyword, :author_id, :issue_tag_ids
+  attr_reader :begin_date, :end_date
   attr_reader :milestone_id, :assigner_id, :status_id, :sort_by, :sort_direction, :current_user
   attr_accessor :queried_issues, :total_issues_count, :closed_issues_count, :opened_issues_count
 
@@ -22,6 +23,8 @@ class Api::V1::Issues::ListService < ApplicationService
     @milestone_id = params[:milestone_id]
     @assigner_id = params[:assigner_id]
     @status_id = params[:status_id]
+    @begin_date = params[:begin_date]
+    @end_date = params[:end_date]
     @sort_by = params[:sort_by].present? ?  params[:sort_by] : 'issues.updated_on'
     @sort_direction = (params[:sort_direction].present? ? params[:sort_direction] : 'desc').downcase
     @current_user = current_user
@@ -68,6 +71,10 @@ class Api::V1::Issues::ListService < ApplicationService
     # status_id
     issues = issues.where(status_id: status_id) if status_id.present?
 
+    if begin_date&.present? || end_date&.present?
+      issues = issues.where("issues.created_on between ? and ?", begin_date&.present? ? begin_date.to_time : Time.now.beginning_of_day, end_date&.present? ? end_date.to_time.end_of_day : Time.now.end_of_day)
+    end
+
     # keyword
     issues = issues.ransack(id_eq: keyword).result.or(issues.ransack(subject_or_description_cont: keyword).result) if keyword.present?
 
diff --git a/app/views/api/v1/issues/index.json.jbuilder b/app/views/api/v1/issues/index.json.jbuilder
index 39a467dd4..cde117fdc 100644
--- a/app/views/api/v1/issues/index.json.jbuilder
+++ b/app/views/api/v1/issues/index.json.jbuilder
@@ -5,7 +5,7 @@ json.total_count @issues.total_count
 json.has_created_issues @project.issues.size > 0
 json.issues @issues.each do |issue| 
   if params[:only_name].present? 
-    json.(issue, :id, :subject)
+    json.(issue, :id, :subject, :project_issues_index)
   else 
     json.partial! "simple_detail", locals: {issue: issue}
   end
diff --git a/app/views/repositories/_contributor.json.jbuilder b/app/views/repositories/_contributor.json.jbuilder
index d2caa53cd..bd1a037f7 100644
--- a/app/views/repositories/_contributor.json.jbuilder
+++ b/app/views/repositories/_contributor.json.jbuilder
@@ -14,5 +14,5 @@ else
   json.name user["name"]
   json.image_url user["avatar_url"]
   db_user = User.find_by_id(user["id"])
-  json.contribution_perc db_user.contribution_perc(project)
+  json.contribution_perc db_user.contribution_perc(project) if db_user.present?
 end