diff --git a/api-ref/source/v1/anomaly-detect.inc b/api-ref/source/v1/anomaly-detect.inc
index 160e905..91608f2 100644
--- a/api-ref/source/v1/anomaly-detect.inc
+++ b/api-ref/source/v1/anomaly-detect.inc
@@ -18,11 +18,11 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-   - title: rule_title
-   - desc: rule_desc
-   - keyword: rule_keyword
-   - log_type: rule_log_type
-   - module: rule_module
+   - title: add_rule_title
+   - desc: add_rule_desc
+   - keyword: add_rule_keyword
+   - log_type: add_rule_log_type
+   - module: add_rule_module
 
 **Example Add Anomaly rule request:**
 
diff --git a/api-ref/source/v1/parameters.yaml b/api-ref/source/v1/parameters.yaml
index 979cc71..af1ca97 100644
--- a/api-ref/source/v1/parameters.yaml
+++ b/api-ref/source/v1/parameters.yaml
@@ -117,6 +117,38 @@ uuid:
   in: query
   required: true
   type: string
+
+# variables in body
+add_rule_desc:
+  description: |
+    the description of anomaly rule.
+  in: body
+  required: true
+  type: string
+add_rule_keyword:
+  description: |
+    keyword, only support exact-match at present.
+  in: body
+  required: true
+  type: string
+add_rule_log_type:
+  description: |
+    the type of log, ``flog`` is platform log, and ``slog`` is operate system log.
+  in: body
+  required: true
+  type: string
+add_rule_module:
+  description: |
+    application module or service.
+  in: body
+  required: true
+  type: string
+add_rule_title:
+  description: |
+    the title of anomaly rule.
+  in: body
+  required: true
+  type: string
 anomaly_log_type:
   description: |
     the log type of anomaly log, such as flog, slog