diff --git a/sql/split.sql b/sql/split.md
similarity index 81%
rename from sql/split.sql
rename to sql/split.md
index ad7291d..b11809d 100644
--- a/sql/split.sql
+++ b/sql/split.md
@@ -1,5 +1,6 @@
---查询JK_CRB_ICD10表，将icd10列按照、分割并将name和icd10联合组成新行，插入JK_CRB_ICD10_tmp表。
-~~~sql
+查询JK_CRB_ICD10表，将icd10列按照、分割并将name和icd10联合组成新行，插入JK_CRB_ICD10_tmp表。    
+
+```sql
 insert into JK_CRB_ICD10_tmp
 select * from (
   SELECT name,
@@ -14,4 +15,4 @@ select * from (
   AND LEVEL <= LENGTH(t.string_to_split) - LENGTH(REPLACE(t.string_to_split, '、', '')) + 1
 ) ina where ina.icd10 is not null;
 
-~~~
\ No newline at end of file
+```
\ No newline at end of file