diff --git a/app/controllers/api/pm/issues_controller.rb b/app/controllers/api/pm/issues_controller.rb
index d7890e15a..f6dfd39b3 100644
--- a/app/controllers/api/pm/issues_controller.rb
+++ b/app/controllers/api/pm/issues_controller.rb
@@ -144,7 +144,8 @@ class Api::Pm::IssuesController < Api::Pm::BaseController
         end
       end
       p.workbook.add_worksheet(:name => 'link_relations') do |sheet| 
-        links = PmLink.joins(:linkable_issue).where(issues: {pm_project_id: params[:pm_project_id]})
+        # links = PmLink.joins(:linkable_issue).where(issues: {pm_project_id: params[:pm_project_id]})
+        links = PmLink.find_by_sql("SELECT `pm_links`.* FROM `pm_links` INNER JOIN `issues` ON `issues`.`id` = `pm_links`.`linkable_id` AND `pm_links`.`linkable_type` = 'Issue' WHERE `issues`.`pm_project_id` = #{params[pm_project_id]}")
         sheet.add_row ["ID", "被关联工作项ID"]
         links.each do |link|
           sheet.add_row [link.linkable_id, link.be_linkable_id]
diff --git a/app/models/pm_link.rb b/app/models/pm_link.rb
index e45578158..d9d9a7893 100644
--- a/app/models/pm_link.rb
+++ b/app/models/pm_link.rb
@@ -19,8 +19,8 @@
 class PmLink < ApplicationRecord
   belongs_to :linkable, polymorphic: true
   belongs_to :be_linkable, polymorphic: true
-  belongs_to :linkable_issue, -> {where(pm_links: {linkable_type: 'Issue'})}, foreign_key: 'linkable_id', class_name: 'Issue'
-  belongs_to :be_linkable_issue, -> {where(pm_links: {be_linkable_type: 'Issue'})}, foreign_key: 'be_linkable_id', class_name: 'Issue'
+  # belongs_to :linkable_issue, -> {where(pm_links: {linkable_type: 'Issue'})}, foreign_key: 'linkable_id', class_name: 'Issue'
+  # belongs_to :be_linkable_issue, -> {where(pm_links: {be_linkable_type: 'Issue'})}, foreign_key: 'be_linkable_id', class_name: 'Issue'
 
   def be_linkable
     be_linkable_type.constantize.find be_linkable_id