diff --git a/easy-es-core/README.md b/easy-es-core/README.md
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--- a/easy-es-core/README.md
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+
+
+## 常见问题
+
+### es查询查过1024个元素报错
+
+报错如下：
+```
+Caused by: org.elasticsearch.common.io.stream.NotSerializableExceptionWrapper: too_many_clauses: maxClauseCount is set to 1024
+```
+
+原因：es的in查询，in中id大于1024个，导致es报错，es默认支持元素数量为1024个
+
+```yaml
+# es 5.x以下：
+index.query.bool.max_clause_count: 10240
+
+# es 5.x以上：
+indices.query.bool.max_clause_count: 300000
+```
+
+### 报错`field expansion matches too many fields`
+
+```
+"reason": "field expansion matches too many fields, limit: 1024, got: 15448"
+```
+
+处理方案同【es查询查过1024个元素】
+
+
+### 字段上限错误
+
+```
+{“error”:{“root_cause”:[{“type”:“remote_transport_exception”,“reason”:"[node1][ip:9300][indices:data/write/update[s]]"}],“type”:“illegal_argument_exception”,“reason”:“Limit of total fields [1000] in index [xxx has been exceeded”},“status”:400}
+```
+
+解决方式:
+```
+PUT index名/_settings
+{
+	"index.mapping.total_fields.limit": 5000
+}
+
+```
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