diff --git a/app/controllers/school_controller.rb b/app/controllers/school_controller.rb
index 1ecd5733..251400d5 100644
--- a/app/controllers/school_controller.rb
+++ b/app/controllers/school_controller.rb
@@ -126,21 +126,26 @@ class SchoolController < ApplicationController
            chinese << char
          end
     end
+    if pinyin.size > 0
+      search_str = "name like '%#{chinese.join("")}%' and pinyin like '%#{pinyin.join("")}%'"
+    else
+      search_str = "name like '%#{chinese.join("")}%'"
+    end
     if params[:no_school_ids]
       if(condition == '')
         @school = School.where("id not in #{params[:no_school_ids]}").reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
         @school_count = School.count
       else
-        @school = School.where("id not in #{params[:no_school_ids]} and name like '%#{chinese.join("")}%' and pinyin like '%#{pinyin.join("")}%'").reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
-        @school_count = School.where("id not in #{params[:no_school_ids]} and name like '%#{chinese.join("")}%' and pinyin like '%#{pinyin.join("")}%'").count
+        @school = School.where("id not in #{params[:no_school_ids]} and #{search_str}").reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
+        @school_count = School.where("id not in #{params[:no_school_ids]} and #{search_str}").count
       end
     else
       if(condition == '')
         @school = School.reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
         @school_count = School.count
       else
-        @school = School.where("name like '%#{chinese.join("")}%' and pinyin like '%#{pinyin.join("")}%'").reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
-        @school_count = School.where("name like '%#{chinese.join("")}%' and pinyin like '%#{pinyin.join("")}%'").count
+        @school = School.where(search_str).reorder('CONVERT (name USING gbk) COLLATE gbk_chinese_ci asc').page((params[:page].to_i || 1)).per(100)
+        @school_count = School.where(search_str).count
       end
     end