diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index 0bbbd9a54..588ee144d 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -644,12 +644,7 @@ class Attachment < ActiveRecord::Base
   def decrease_attchments_count
     if self.container_type == "Project" && !self.project.project_score.nil?
       attach_count = self.container.project_score.attach_num - 1
-      if attach_count < 0
-        self.container.project_score.update_attribute(:attach_num, 0)
-      else
-        self.container.project_score.update_attribute(:attach_num, attach_count)
-      end
-
+      self.container.project_score.update_attribute(:attach_num, attach_count < 0 ? 0 : attach_count)
     end
   end
 end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index e1de4cd9e..c82f6f0be 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -184,7 +184,7 @@ class Issue < ActiveRecord::Base
   def decrease_issues_count
     unless self.project.project_score.nil?
       issue_count = self.project.project_score.issue_num - 1
-      self.project.project_score.update_attribute(:issue_num, issue_count)
+      self.project.project_score.update_attribute(:issue_num, issue_count < 0 ? 0 : issue_count)
     end
   end
 
diff --git a/app/models/journal.rb b/app/models/journal.rb
index b184c82e6..c37b8d2c5 100644
--- a/app/models/journal.rb
+++ b/app/models/journal.rb
@@ -219,8 +219,9 @@ class Journal < ActiveRecord::Base
   # 减少留言数量统计
   def decrease_issues_journal_count
     unless self.issue.project.nil?
-      project = self.issue.project
-      project.project_score.update_attribute(:issue_journal_num, project.project_score.issue_journal_num - 1)
+      journal_count = self.issue.project.project_score.issue_journal_num - 1
+      # project = self.issue.project
+       self.issue.project.project_score.update_attribute(:issue_journal_num, journal_count < 0 ? 0 : journal_count)
     end
   end
 
diff --git a/app/models/message.rb b/app/models/message.rb
index 675d37790..6381f444f 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -146,10 +146,10 @@ class Message < ActiveRecord::Base
       # 讨论区
       if self.parent_id.nil?
         count = self.project.project_score.board_num - 1
-        self.project.project_score.update_attribute(:board_num, count)
+        self.project.project_score.update_attribute(:board_num, count < 0 ? 0 : count)
       else # 回复
         count = self.project.project_score.board_message_num - 1
-        self.project.project_score.update_attribute(:board_message_num, count)
+        self.project.project_score.update_attribute(:board_message_num, count < 0 ? 0 : count)
       end
     end
   end
diff --git a/app/models/news.rb b/app/models/news.rb
index fee5d2801..d0fccae17 100644
--- a/app/models/news.rb
+++ b/app/models/news.rb
@@ -126,7 +126,7 @@ class News < ActiveRecord::Base
   def decrease_news_count
     if self.project && !self.project.project_score.nil?
       count = self.project.project_score.news_num - 1
-      self.project.project_score.update_attribute(:news_num, count)
+      self.project.project_score.update_attribute(:news_num, count < 0 ? 0 : count)
     end
   end