diff --git a/lib/tasks/statistic_subject_info.rake b/lib/tasks/statistic_subject_info.rake
index 6373d7170..04e6c1195 100644
--- a/lib/tasks/statistic_subject_info.rake
+++ b/lib/tasks/statistic_subject_info.rake
@@ -16,15 +16,20 @@ namespace :subjects do
       passed_count = (study_count == sr.study_count ? sr.passed_count : data.passed_count)
       course_used_count = (study_count == sr.study_count ? sr.course_used_count : data.course_used_count)
       school_used_count = (study_count == sr.study_count ? sr.school_used_count : data.school_used_count)
-      update_params = {
-          study_count: study_count,
-          course_study_count: course_study_count,
-          initiative_study: (study_count - course_study_count),
-          passed_count: passed_count,
-          course_used_count: course_used_count,
-          school_used_count: school_used_count
-      }
-      sr.update_attributes!(update_params)
+      unless course_study_count == sr.course_study_count &&
+          passed_count == sr.passed_count &&
+          course_used_count == sr.course_used_count &&
+          school_used_count == sr.school_used_count
+        update_params = {
+            study_count: study_count,
+            course_study_count: course_study_count,
+            initiative_study: (study_count - course_study_count),
+            passed_count: passed_count,
+            course_used_count: course_used_count,
+            school_used_count: school_used_count
+        }
+        sr.update_attributes!(update_params)
+      end
     end
     puts("---------------------data_statistic_end")
     Rails.logger.info("---------------------data_statistic_end")
@@ -40,14 +45,20 @@ namespace :subjects do
       data = Subjects::CourseUsedInfoService.call(subject)
       data.each do |key|
         scr = SubjectCourseRecord.find_or_create_by!(school_id: key[:school_id], subject_id: subject.id)
-        update_params = {
-            school_name: key[:school_name],
-            course_count: key[:course_count],
-            student_count: key[:student_count],
-            choice_shixun_num: key[:choice_shixun_num],
-            choice_shixun_frequency: key[:choice_shixun_frequency]
-        }
-        scr.update_attributes(update_params)
+        unless key[:school_name] == scr.school_name &&
+            key[:course_count] == scr.course_count &&
+            key[:student_count] == scr.student_count &&
+            key[:choice_shixun_num] == scr.choice_shixun_num &&
+            key[:choice_shixun_frequency] == scr.choice_shixun_frequency
+          update_params = {
+              school_name: key[:school_name],
+              course_count: key[:course_count],
+              student_count: key[:student_count],
+              choice_shixun_num: key[:choice_shixun_num],
+              choice_shixun_frequency: key[:choice_shixun_frequency]
+          }
+          scr.update_attributes(update_params)
+        end
       end
     end
     puts("---------------------course_info_statistic_end")
@@ -64,18 +75,26 @@ namespace :subjects do
       data = Subjects::ShixunUsedInfoService.call(subject)
       data.each do |key|
         ssi = SubjectShixunInfo.find_or_create_by!(shixun_id: key[:shixun_id], subject_id: subject.id)
-        update_params = {
-            stage: key[:stage],
-            shixun_name: key[:name],
-            challenge_count: key[:challenge_count],
-            course_count: key[:course_count],
-            school_count: key[:school_count],
-            used_count: key[:used_count],
-            passed_count: key[:passed_count],
-            evaluate_count: key[:evaluate_count],
-            passed_ave_time: key[:passed_ave_time]
-        }
-        ssi.update_attributes(update_params)
+        unless key[:challenge_count] == ssi.challenge_count &&
+            key[:course_count] == ssi.course_count &&
+            key[:school_count] == ssi.school_count &&
+            key[:used_count] == ssi.used_count &&
+            key[:passed_count] == ssi.passed_count &&
+            key[:evaluate_count] == ssi.evaluate_count &&
+            key[:passed_ave_time] == ssi.passed_ave_time
+          update_params = {
+              stage: key[:stage],
+              shixun_name: key[:name],
+              challenge_count: key[:challenge_count],
+              course_count: key[:course_count],
+              school_count: key[:school_count],
+              used_count: key[:used_count],
+              passed_count: key[:passed_count],
+              evaluate_count: key[:evaluate_count],
+              passed_ave_time: key[:passed_ave_time]
+          }
+          ssi.update_attributes(update_params)
+        end
       end
     end
     puts("---------------------shixun_info_statistic_end")
@@ -83,7 +102,7 @@ namespace :subjects do
   end
 
   task user_info_statistic: :environment do
-    puts("---------------------user_info_statistic_begin")
+    puts("---------------------vim ./")
     Rails.logger.info("---------------------user_info_statistic_begin")
     subjects = Subject.where(status: 2)
     subjects.find_each(batch_size: 100) do |subject|
@@ -91,15 +110,22 @@ namespace :subjects do
       data = Subjects::UserUsedInfoService.call(subject)
       data.each do |key|
         sui = SubjectUserInfo.find_or_create_by!(user_id: key[:user_id], subject_id: subject.id)
-        update_params = {
-            username: key[:name],
-            passed_myshixun_count: key[:passed_myshixun_count],
-            passed_games_count: key[:passed_games_count],
-            code_line_count: key[:code_line_count],
-            evaluate_count: key[:evaluate_count],
-            cost_time: key[:cost_time]
-        }
-        sui.update_attributes(update_params)
+        unless key[:passed_myshixun_count] == sui.passed_myshixun_count &&
+            key[:passed_games_count] == sui.passed_games_count &&
+            key[:code_line_count] == sui.code_line_count &&
+            key[:evaluate_count] == sui.evaluate_count &&
+            key[:cost_time] == sui.cost_time
+          update_params = {
+              username: key[:name],
+              passed_myshixun_count: key[:passed_myshixun_count],
+              passed_games_count: key[:passed_games_count],
+              code_line_count: key[:code_line_count],
+              evaluate_count: key[:evaluate_count],
+              cost_time: key[:cost_time]
+          }
+          sui.update_attributes(update_params)
+        end
+
       end
     end
     puts("---------------------user_info_statistic_end")