diff --git a/app/controllers/api/pm/issues_controller.rb b/app/controllers/api/pm/issues_controller.rb
index 0d00d93eb..c9192ad94 100644
--- a/app/controllers/api/pm/issues_controller.rb
+++ b/app/controllers/api/pm/issues_controller.rb
@@ -1,7 +1,7 @@
 class Api::Pm::IssuesController < Api::Pm::BaseController
   before_action :require_login, except: [:index]
   before_action :load_project
-  before_action :load_issue, only: %i[show update destroy link_index]
+  before_action :load_issue, only: %i[show update destroy link_index link_issues]
   before_action :load_issues, only: %i[batch_update batch_destroy]
   before_action :check_issue_operate_permission, only: %i[update destroy]
 
@@ -32,6 +32,19 @@ class Api::Pm::IssuesController < Api::Pm::BaseController
     render 'api/v1/issues/index'
   end
 
+  def link_issues
+    pm_issue_type = params[:pm_issue_type] || [1, 2, 3]
+    not_join_id = Issue.where(root_id: @issue.id).pluck(:id)
+    not_join_id << @issue.id
+    object_issues = Issue.where(
+      pm_project_id: params[:pm_project_id],
+      root_id: nil,
+      pm_issue_type: pm_issue_type
+    ).where.not(id: not_join_id)
+    @issues = kaminari_paginate(object_issues)
+    render 'api/v1/issues/index'
+  end
+
 
   def show
     @issue.associate_attachment_container
diff --git a/config/routes/api.rb b/config/routes/api.rb
index 2a08425c4..3a9b4ed88 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -11,6 +11,7 @@ defaults format: :json do
         end
         member do
           get :link_index
+          get :link_issues
         end
 
         resources :issue_links