diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index f128746ef..cbf4fee2b 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -24,11 +24,11 @@ class SubjectsController < ApplicationController
     # 最热排序
     if reorder == "myshixun_count"
       if current_laboratory.main_site?
-        not_subject_ids = Subject.joins(:laboratory_subjects).where("laboratory_subjects.laboratory_id != #{current_laboratory.id}")
+        not_subject_ids = Subject.joins(:laboratory_subjects).where("laboratory_subjects.laboratory_id != #{current_laboratory.id}").pluck(:id)
         not_subject_ids = not_subject_ids.length > 0 ? "(" + not_subject_ids.join(",") + ")" : "(-1)"
         laboratory_join = " AND subjects.id not in #{not_subject_ids} "
       else
-        subject_ids = Subject.joins(:laboratory_subjects).where(laboratory_subjects: { laboratory_id: current_laboratory.id })
+        subject_ids = Subject.joins(:laboratory_subjects).where(laboratory_subjects: { laboratory_id: current_laboratory.id }).pluck(:id)
         subject_ids = subject_ids.length > 0 ? "(" + subject_ids.join(",") + ")" : "(-1)"
         laboratory_join = " AND subjects.id in #{subject_ids} "
       end