diff --git a/apisix/plugins/jwt-auth.lua b/apisix/plugins/jwt-auth.lua
index 0d33346e759c..8209aa5e293a 100644
--- a/apisix/plugins/jwt-auth.lua
+++ b/apisix/plugins/jwt-auth.lua
@@ -35,7 +35,8 @@ local schema = {
         secret = {type = "string"},
         algorithm = {
             type = "string",
-            enum = {"HS256", "HS384", "HS512", "RS256", "ES256"}
+            enum = {"HS256", "HS512", "RS256"},
+            default = "HS256"
         },
         exp = {type = "integer", minimum = 1},
         base64_secret = {
@@ -85,10 +86,6 @@ function _M.check_schema(conf)
         conf.secret = ngx_encode_base64(resty_random.bytes(32, true))
     end
 
-    if not conf.algorithm then
-        conf.algorithm = "HS256"
-    end
-
     if not conf.exp then
         conf.exp = 60 * 60 * 24
     end
@@ -207,11 +204,11 @@ local function gen_token()
     local jwt_token = jwt:sign(
         auth_secret,
         {
-            header={
+            header = {
                 typ = "JWT",
                 alg = consumer.auth_conf.algorithm
             },
-            payload={
+            payload = {
                 key = key,
                 exp = ngx_time() + consumer.auth_conf.exp
             }
diff --git a/doc/plugins/jwt-auth.md b/doc/plugins/jwt-auth.md
index 03b6c9232e37..1f5aa1e1cfc0 100644
--- a/doc/plugins/jwt-auth.md
+++ b/doc/plugins/jwt-auth.md
@@ -41,7 +41,7 @@ For more information on JWT, refer to [JWT](https://jwt.io/) for more informatio
 | ------------- | ------- | ----------- | ------- | --------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
 | key           | string  | required    |         |                                               | different `consumer` have different value, it's unique. different `consumer` use the same `key`, and there will be a request matching exception. |
 | secret        | string  | optional    |         |                                               | encryption key. if you do not specify, the value is auto-generated in the background.                                                            |
-| algorithm     | string  | optional    | "HS256" | ["HS256", "HS384", "HS512", "RS256", "ES256"] | encryption algorithm.                                                                                                                            |
+| algorithm     | string  | optional    | "HS256" | ["HS256", "HS512", "RS256"] | encryption algorithm.                                                                                                                            |
 | exp           | integer | optional    | 86400   | [1,...]                                       | token's expire time, in seconds                                                                                                                  |
 | base64_secret | boolean | optional    | false   |                                               | whether secret is base64 encoded                                                                                                                 |
 
diff --git a/doc/zh-cn/plugins/jwt-auth.md b/doc/zh-cn/plugins/jwt-auth.md
index aa7126c41fb7..2d431e421815 100644
--- a/doc/zh-cn/plugins/jwt-auth.md
+++ b/doc/zh-cn/plugins/jwt-auth.md
@@ -42,7 +42,7 @@
 | ------------- | ------- | ------ | ------- | --------------------------------------------- | ------------------------------------------------------------------------------------------------------------- |
 | key           | string  | 必须   |         |                                               | 不同的 `consumer` 对象应有不同的值，它应当是唯一的。不同 consumer 使用了相同的 `key` ，将会出现请求匹配异常。 |
 | secret        | string  | 可选   |         |                                               | 加密秘钥。如果您未指定，后台将会自动帮您生成。                                                                |
-| algorithm     | string  | 可选   | "HS256" | ["HS256", "HS384", "HS512", "RS256", "ES256"] | 加密算法                                                                                                      |
+| algorithm     | string  | 可选   | "HS256" | ["HS256", "HS512", "RS256"] | 加密算法                                                                                                      |
 | exp           | integer | 可选   | 86400   | [1,...]                                       | token 的超时时间                                                                                              |
 | base64_secret | boolean | 可选   | false   |                                               | 密钥是否为 base64 编码                                                                                        |