diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md
index 33c3f0233..6598fc6e0 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md
@@ -166,9 +166,9 @@ Spring Boot 2.x 可以通过访问 http://127.0.0.1:18084/actuator/nacosconfig 
 配置项|key|默认值|说明
 ----|----|-----|-----
 服务端地址|spring.cloud.nacos.config.server-addr||服务器ip和端口
-DataId前缀|spring.cloud.nacos.config.prefix|${spring.application.name}|
+DataId前缀|spring.cloud.nacos.config.prefix|${spring.application.name}|DataId的前缀，默认值为应用名称
 Group|spring.cloud.nacos.config.group|DEFAULT_GROUP|
-dataID后缀及内容文件格式|spring.cloud.nacos.config.file-extension|properties|dataId的后缀，同时也是配置内容的文件格式，目前只支持 properties
+DataId后缀及内容文件格式|spring.cloud.nacos.config.file-extension|properties|DataId的后缀，同时也是配置内容的文件格式，目前只支持 properties
 配置内容的编码方式|spring.cloud.nacos.config.encode|UTF-8|配置的编码
 获取配置的超时时间|spring.cloud.nacos.config.timeout|3000|单位为 ms
 配置的命名空间|spring.cloud.nacos.config.namespace||常用场景之一是不同环境的配置的区分隔离，例如开发测试环境和生产环境的资源隔离等。
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md
index 072bfa8e2..71b5642d2 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md
@@ -171,9 +171,9 @@ As shown in the figure above, Sources indicates which Nacos Config configuration
 Configuration item|key|default value|Description
 ----|----|-----|-----
 server address|spring.cloud.nacos.config.server-addr||server id and port
-DataId prefix|spring.cloud.nacos.config.prefix||${spring.application.name}|
+DataId prefix|spring.cloud.nacos.config.prefix|${spring.application.name}|the prefix of nacos config DataId
 Group|spring.cloud.nacos.config.group|DEFAULT_GROUP|
-dataID suffix|spring.cloud.nacos.config.file-extension|properties|the suffix of nacos config dataId, also the file extension of config content.
+DataID suffix|spring.cloud.nacos.config.file-extension|properties|the suffix of nacos config DataId, also the file extension of config content.
 encoding |spring.cloud.nacos.config.encode|UTF-8|Content encoding
 timeout|spring.cloud.nacos.config.timeout|3000|Get the configuration timeout period,unit is ms
 namespace|spring.cloud.nacos.config.namespace||One of the common scenarios is the separation of the configuration of different environments, such as the development of the test environment and the resource isolation of the production environment.
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme-zh.md b/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme-zh.md
index 0b5d08dac..9b550a2dc 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme-zh.md
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme-zh.md
@@ -187,7 +187,7 @@ Spring Boot 2.x 可以通过访问 http://127.0.0.1:18083/actuator/nacos-discove
 配置项|key|默认值|说明
 ----|----|-----|-----
 服务端地址|spring.cloud.nacos.discovery.server-addr||
-服务名|spring.cloud.nacos.discovery.service|spring.application.name|
+服务名|spring.cloud.nacos.discovery.service|${spring.application.name}|注册到Nacos上的服务名称，默认值为应用名称
 权重|spring.cloud.nacos.discovery.weight|1|取值范围 1 到 100，数值越大，权重越大
 网卡名|spring.cloud.nacos.discovery.network-interface||当IP未配置时，注册的IP为此网卡所对应的IP地址，如果此项也未配置，则默认取第一块网卡的地址
 注册的IP地址|spring.cloud.nacos.discovery.ip||优先级最高
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md b/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md
index 3bf0cf3a2..1904fa6d0 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md
@@ -195,7 +195,7 @@ As shown in the figure above, NacosDiscoveryProperties is the configuration of N
 Configuration item|key|default value|Description
 ----|----|-----|-----
 server address|spring.cloud.nacos.discovery.server-addr||
-service|spring.cloud.nacos.discovery.service|spring.application.name|service id to registry
+service|spring.cloud.nacos.discovery.service|${spring.application.name}|service id to registry
 weight|spring.cloud.nacos.discovery.weight|1|value from 1 to 100, The larger the value, the larger the weight
 ip|spring.cloud.nacos.discovery.ip||ip address to registry, Highest priority
 network interface|spring.cloud.nacos.discovery.network-interface||When the IP is not configured, the registered IP address is the IP address corresponding to the network-interface. If this item is not configured, the address of the first network-interface is taken by default.