diff --git a/app/services/search_service.rb b/app/services/search_service.rb
index df90495f5..350048c2e 100644
--- a/app/services/search_service.rb
+++ b/app/services/search_service.rb
@@ -40,11 +40,21 @@ class SearchService < ApplicationService
   def extra_options
     case params[:type].to_s.strip
     when 'shixun' then
-      shixun_ids = Laboratory.current.shixuns.pluck(:id)
-      Laboratory.current.main_site? ? {} : { where: { id: shixun_ids } }
+      if Laboratory.current.main_site?
+        not_shixun_ids = Shixun.joins(:laboratory_shixuns).where("laboratory_shixuns.laboratory_id != #{Laboratory.current.id}")
+        shixun_ids = Shixun.where.not(id: not_shixun_ids).pluck(:id)
+      else
+        shixun_ids = Laboratory.current.shixuns.pluck(:id)
+      end
+      { where: { id: shixun_ids } }
     when 'subject' then
-      subject_ids = Laboratory.current.subjects.pluck(:id)
-      Laboratory.current.main_site? ? {} : { where: { id: subject_ids } }
+      if Laboratory.current.main_site?
+        not_subject_ids = Subject.joins(:laboratory_subjects).where("laboratory_subjects.laboratory_id != #{Laboratory.current.id}")
+        subject_ids = Subject.where.not(id: not_subject_ids).pluck(:id)
+      else
+        subject_ids = Laboratory.current.subjects.pluck(:id)
+      end
+      { where: { id: subject_ids } }
     when 'course' then
       { where: { laboratory_id: Laboratory.current.id } }
     else
diff --git a/app/services/shixun_search_service.rb b/app/services/shixun_search_service.rb
index 1b35fbe54..63e10d6b0 100644
--- a/app/services/shixun_search_service.rb
+++ b/app/services/shixun_search_service.rb
@@ -37,8 +37,11 @@ class ShixunSearchService < ApplicationService
     end
 
     ## 云上实验室过滤
-    unless laboratory.main_site?
-      @shixuns = @shixuns.joins(:laboratory_shixuns).where(laboratory_shixuns: { laboratory_id: @laboratory.id })
+    if laboratory.main_site?
+      not_shixun_ids = Shixun.joins(:laboratory_shixuns).where("laboratory_shixuns.laboratory_id != #{laboratory.id}")
+      @shixuns = @shixuns.where.not(id: not_shixun_ids)
+    else
+      @shixuns = @shixuns.joins(:laboratory_shixuns).where(laboratory_shixuns: { laboratory_id: laboratory.id })
     end
 
     # laboratory = Laboratory.find_by_subdomain(subdomain)
diff --git a/app/services/subject_search_service.rb b/app/services/subject_search_service.rb
index 9985e8693..101a31085 100644
--- a/app/services/subject_search_service.rb
+++ b/app/services/subject_search_service.rb
@@ -22,7 +22,10 @@ class SubjectSearchService < ApplicationService
     # @subjects = @subjects.where(id: laboratory.subjects) if laboratory
 
     ## 云上实验室过滤
-    unless laboratory.main_site?
+    if laboratory.main_site?
+      not_subject_ids = Subject.joins(:laboratory_subjects).where("laboratory_subjects.laboratory_id != #{laboratory.id}")
+      @subjects = @subjects.where.not(id: not_subject_ids)
+    else
       @subjects = @subjects.joins(:laboratory_subjects).where(laboratory_subjects: { laboratory_id: laboratory.id })
     end