diff --git a/docs/en/FAQ/ES-Server-FAQ.md b/docs/en/FAQ/ES-Server-FAQ.md
index 0b2d61365..7e1d039c7 100644
--- a/docs/en/FAQ/ES-Server-FAQ.md
+++ b/docs/en/FAQ/ES-Server-FAQ.md
@@ -1,6 +1,6 @@
 # ElasticSearch 
-Some new users may face
-* ElasticSearch performance is not as good as expected. Such as, can't have latest data after a while.
+Some new users may encounter the following issues:
+* The performance of ElasticSearch is not as good as expected. For instance, the latest data cannot be accessed after some time.
 
 Or 
 * ERROR CODE 429.
@@ -13,9 +13,9 @@ Or
         at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:522) ~[elasticsearch
 ```
 
-You could add following config to `elasticsearch.yml`, set the value based on your env.
+You could add the following config to `elasticsearch.yml`, and set the value based on your environment variable.
 ```yml
-# In tracing scenario, consider to set more than this at least.
+# In the case of tracing, consider setting a value higher than this.
 thread_pool.index.queue_size: 1000
 thread_pool.write.queue_size: 1000
 
@@ -23,4 +23,4 @@ thread_pool.write.queue_size: 1000
 index.max_result_window: 1000000
 ```
 
-Read ElasticSearch official documents to get more information.
+For more information, see ElasticSearch's official documentation.
diff --git a/docs/en/FAQ/EnhanceRequireObjectCache-Cast-Exception.md b/docs/en/FAQ/EnhanceRequireObjectCache-Cast-Exception.md
index da757b2e2..866810a34 100644
--- a/docs/en/FAQ/EnhanceRequireObjectCache-Cast-Exception.md
+++ b/docs/en/FAQ/EnhanceRequireObjectCache-Cast-Exception.md
@@ -1,5 +1,5 @@
 ### Problem
-when you start your application with `skywalking` agent,if you find this exception in your agent log which mean `EnhanceRequireObjectCache` can not be casted to `EnhanceRequireObjectCache`.eg:
+When you start your application with the `skywalking` agent, you may find this exception in your agent log which means that `EnhanceRequireObjectCache` cannot be casted to `EnhanceRequireObjectCache`. For example:
 ```java
 ERROR 2018-05-07 21:31:24 InstMethodsInter :  class[class org.springframework.web.method.HandlerMethod] after method[getBean] intercept failure
 java.lang.ClassCastException: org.apache.skywalking.apm.plugin.spring.mvc.commons.EnhanceRequireObjectCache cannot be cast to org.apache.skywalking.apm.plugin.spring.mvc.commons.EnhanceRequireObjectCache
@@ -13,7 +13,8 @@ java.lang.ClassCastException: org.apache.skywalking.apm.plugin.spring.mvc.common
 ```
 
 ### Reason
-this exception may caused by some `hot deployment` tools(`spring-boot-devtool`) or some else which may change the  `classloader` in runtime.
-### Resolve 
-1. Production environment does not appear this error because developer tools are automatically disabled,look [spring-boot-devtools](https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-devtools.html)
-2. If you want to debug in your development environment normally,you should remove such `hot deployment` package in your lib path temporarily.
+This exception may be caused by `hot deployment` tools (`spring-boot-devtool`) or otherwise, which changes the  `classloader` in runtime.
+
+### Resolution
+1. This error does not occur under the production environment, since developer tools are automatically disabled: See [spring-boot-devtools](https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-devtools.html).
+2. If you would like to debug in your development environment as usual, you should temporarily remove such `hot deployment` package in your lib path.