diff --git a/README.md b/README.md
index d4d06778c0..2d9b58fcce 100644
--- a/README.md
+++ b/README.md
@@ -7,46 +7,17 @@ It is supposed to:
 + Talk to TiKV for reading/writing data and the resulted data is encoded/decoded just like what we do in TiDB.
 + Talk to Coprocessor for calculation pushdown
 
-## How to build
+## Quick Start
 
-```
-mvn clean package -Dmaven.test.skip=true
-```
+> TiKV Java Client is designed to communicate with [pd](https://github.com/tikv/pd) and [tikv](https://github.com/tikv/tikv), please run TiKV and PD in advance.
 
-## How to run test
+Build java client from source file:
 
-```
-export RAWKV_PD_ADDRESSES=127.0.0.1:2379
-export TXNKV_PD_ADDRESSES=127.0.0.1:2379
-mvn clean test
-```
-
-## Usage
-
-This project is designed to hook with [pd](https://github.com/tikv/pd) and [tikv](https://github.com/tikv/tikv).
-
-When you work with this project, you have to communicate with `pd` and `tikv`. Please run TiKV and PD in advance.
-
-## Component: Raw Ti-Client in Java
-
-Java Implementation of Raw TiKV-Client to support RawKVClient commands.
-
-Demo is avaliable in [KVRawClientTest](https://github.com/birdstorm/KVRawClientTest/)
-
-### Build
-```
+```sh
 mvn clean install -Dmaven.test.skip=true
 ```
 
-### Add to dependency
-
-#### Use jar for binary
-
-Add your jar built with all dependencies into you project's library to use `tikv-client-java` as dependency
-
-#### Use as maven dependency
-
-After building, add following lines into your `pom.xml` if you are using Maven
+Add maven dependency to `pom.xml`:
 
 ```xml
 <dependency>
@@ -56,10 +27,7 @@ After building, add following lines into your `pom.xml` if you are using Maven
 </dependency>
 ```
 
-### Entrance
-`org.tikv.raw.RawKVClient`
-
-### Create a RawKVClient
+Create a RawKVClient and communicates with TiKV:
 
 ```java
 import org.tikv.common.TiConfiguration;
@@ -76,153 +44,16 @@ public class Main {
 }
 ```
 
-## Java Client Configuration Parameter
+Find more demo in [KVRawClientTest](https://github.com/birdstorm/KVRawClientTest/)
 
-### JVM Parameter
+## Documentation
 
-The following includes JVM related parameters.
+See [Java Client Documents](/docs/README.md) for references about how to config and monitor Java Client.
 
-#### tikv.pd.addresses
-- pd addresses, separated by comma
-- default: 127.0.0.1:2379
+## Community
 
-#### tikv.grpc.timeout_in_ms
-- timeout of grpc request  
-- default: 600ms
-
-#### tikv.grpc.scan_timeout_in_ms
-- timeout of scan/delete range grpc request
-- default: 20s
-
-#### tikv.importer.max_kv_batch_bytes
-- Maximal package size transporting from clients to TiKV Server (ingest API)
-- default: 1048576 (1M)
-
-#### tikv.importer.max_kv_batch_size
-- Maximal batch size transporting from clients to TiKV Server (ingest API)
-- default: 32768 (32K)
-
-#### tikv.scatter_wait_seconds
-- time to wait for scattering regions
-- default: 300 (5min)
-
-#### tikv.rawkv.default_backoff_in_ms
-- RawKV default backoff in milliseconds
-- default: 20000 (20 seconds)
-
-### Metrics Parameter
-
-#### tikv.metrics.enable
-- whether to enable metrics exporting
-- default: false
-
-#### tikv.metrics.port
-- the metrics exporting http port
-- default: 3140
-
-### ThreadPool Parameter
-
-The following includes ThreadPool related parameters, which can be passed in through JVM parameters.
-
-#### tikv.batch_get_concurrency
-- the thread pool size of batchGet on client side
-- default: 20
-
-#### tikv.batch_put_concurrency
-- the thread pool size of batchPut on client side
-- default: 20
-
-#### tikv.batch_delete_concurrency
-- the thread pool size of batchDelete on client side
-- default: 20
-
-#### tikv.batch_scan_concurrency
-- the thread pool size of batchScan on client side
-- default: 5
-
-#### tikv.delete_range_concurrency
-- the thread pool size of deleteRange on client side
-- default: 20
-
-#### tikv.enable_atomic_for_cas
-- whether to enable `Compare And Set`, set true if using `RawKVClient.compareAndSet` or `RawKVClient.putIfAbsent`
-- default: false
-
-### TLS
-
-#### tikv.tls_enable
-- whether to enable TLS
-- default: false
-
-#### tikv.trust_cert_collection
-- Trusted certificates for verifying the remote endpoint's certificate, e.g. /home/tidb/ca.pem. The file should contain an X.509 certificate collection in PEM format.
-- default: null
-
-#### tikv.key_cert_chain
-- an X.509 certificate chain file in PEM format, e.g. /home/tidb/client.pem.
-- default: null
-
-#### tikv.key_file
-- a PKCS#8 private key file in PEM format. e.g. /home/tidb/client-key.pem.
-- default: null
-
-#### tikv.rawkv.read_timeout_in_ms
-- RawKV read timeout in milliseconds. This parameter controls the timeout of `get` `getKeyTTL`.
-- default: 2000 (2 seconds)
-
-#### tikv.rawkv.write_timeout_in_ms
-- RawKV write timeout in milliseconds. This parameter controls the timeout of `put` `putAtomic` `putIfAbsent` `delete` `deleteAtomic`.
-- default: 2000 (2 seconds)
-
-#### tikv.rawkv.batch_read_timeout_in_ms
-- RawKV batch read timeout in milliseconds. This parameter controls the timeout of `batchGet`.
-- default: 2000 (2 seconds)
-
-#### tikv.rawkv.batch_write_timeout_in_ms
-- RawKV batch write timeout in milliseconds. This parameter controls the timeout of `batchPut` `batchDelete` `batchDeleteAtomic`.
-- default: 2000 (2 seconds)
-
-#### tikv.rawkv.scan_timeout_in_ms
-- RawKV scan timeout in milliseconds. This parameter controls the timeout of `batchScan` `scan` `scanPrefix`.
-- default: 10000 (10 seconds)
-
-#### tikv.rawkv.clean_timeout_in_ms
-- RawKV clean timeout in milliseconds. This parameter controls the timeout of `deleteRange` `deletePrefix`.
-- default: 600000 (10 minutes)
-
-## Metrics
-
-Client Java supports exporting metrics to Prometheus using poll mode and viewing on Grafana. The following steps shows how to enable this function.
-
-### Step 1: Enable metrics exporting
-
-- set the config `tikv.metrics.enable` to `true`
-- call TiConfiguration.setMetricsEnable(true)
-
-### Step 2: Set the metrics port
-
-- set the config `tikv.metrics.port`
-- call TiConfiguration.setMetricsPort
-
-Default port is 3140.
-
-### Step 3: Config Prometheus
-
-Add the following config to `conf/prometheus.yml` and restart Prometheus.
-
-```yaml
-- job_name: "tikv-client"
-    honor_labels: true
-    static_configs:
-    - targets:
-        - '127.0.0.1:3140'
-        - '127.0.0.2:3140'
-        - '127.0.0.3:3140'
-```
-
-### Step 4: Config Grafana
-
-Import the [Client-Java-Summary dashboard config](/metrics/grafana/client_java_summary.json) to Grafana.
+See [Contribution Guide](/docs/dev-guide.md) for references about how to contribute to this project.
 
 ## License
-Apache 2.0 license. See the [LICENSE](./LICENSE) file for details.
+
+Apache 2.0 license. See the [LICENSE](./LICENSE) file for details.
\ No newline at end of file
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000000..a0019526e3
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,10 @@
+# Client Java Docs
+
+## Administration
+
+- [Configuration](./configuration.md)
+- [Monitoring](./monitoring.md)
+
+## How to contribute
+
+- [Contribution Guide](./dev-guide.md)
diff --git a/docs/configuration.md b/docs/configuration.md
new file mode 100644
index 0000000000..39070e9b25
--- /dev/null
+++ b/docs/configuration.md
@@ -0,0 +1,113 @@
+## Java Client Configuration Parameter
+
+### JVM Parameter
+
+The following includes JVM related parameters.
+
+#### tikv.pd.addresses
+- pd addresses, separated by comma
+- default: 127.0.0.1:2379
+
+#### tikv.grpc.timeout_in_ms
+- timeout of grpc request  
+- default: 600ms
+
+#### tikv.grpc.scan_timeout_in_ms
+- timeout of scan/delete range grpc request
+- default: 20s
+
+#### tikv.importer.max_kv_batch_bytes
+- Maximal package size transporting from clients to TiKV Server (ingest API)
+- default: 1048576 (1M)
+
+#### tikv.importer.max_kv_batch_size
+- Maximal batch size transporting from clients to TiKV Server (ingest API)
+- default: 32768 (32K)
+
+#### tikv.scatter_wait_seconds
+- time to wait for scattering regions
+- default: 300 (5min)
+
+#### tikv.rawkv.default_backoff_in_ms
+- RawKV default backoff in milliseconds
+- default: 20000 (20 seconds)
+
+### Metrics Parameter
+
+#### tikv.metrics.enable
+- whether to enable metrics exporting
+- default: false
+
+#### tikv.metrics.port
+- the metrics exporting http port
+- default: 3140
+
+### ThreadPool Parameter
+
+The following includes ThreadPool related parameters, which can be passed in through JVM parameters.
+
+#### tikv.batch_get_concurrency
+- the thread pool size of batchGet on client side
+- default: 20
+
+#### tikv.batch_put_concurrency
+- the thread pool size of batchPut on client side
+- default: 20
+
+#### tikv.batch_delete_concurrency
+- the thread pool size of batchDelete on client side
+- default: 20
+
+#### tikv.batch_scan_concurrency
+- the thread pool size of batchScan on client side
+- default: 5
+
+#### tikv.delete_range_concurrency
+- the thread pool size of deleteRange on client side
+- default: 20
+
+#### tikv.enable_atomic_for_cas
+- whether to enable `Compare And Set`, set true if using `RawKVClient.compareAndSet` or `RawKVClient.putIfAbsent`
+- default: false
+
+### TLS
+
+#### tikv.tls_enable
+- whether to enable TLS
+- default: false
+
+#### tikv.trust_cert_collection
+- Trusted certificates for verifying the remote endpoint's certificate, e.g. /home/tidb/ca.pem. The file should contain an X.509 certificate collection in PEM format.
+- default: null
+
+#### tikv.key_cert_chain
+- an X.509 certificate chain file in PEM format, e.g. /home/tidb/client.pem.
+- default: null
+
+#### tikv.key_file
+- a PKCS#8 private key file in PEM format. e.g. /home/tidb/client-key.pem.
+- default: null
+
+#### tikv.rawkv.read_timeout_in_ms
+- RawKV read timeout in milliseconds. This parameter controls the timeout of `get` `getKeyTTL`.
+- default: 2000 (2 seconds)
+
+#### tikv.rawkv.write_timeout_in_ms
+- RawKV write timeout in milliseconds. This parameter controls the timeout of `put` `putAtomic` `putIfAbsent` `delete` `deleteAtomic`.
+- default: 2000 (2 seconds)
+
+#### tikv.rawkv.batch_read_timeout_in_ms
+- RawKV batch read timeout in milliseconds. This parameter controls the timeout of `batchGet`.
+- default: 2000 (2 seconds)
+
+#### tikv.rawkv.batch_write_timeout_in_ms
+- RawKV batch write timeout in milliseconds. This parameter controls the timeout of `batchPut` `batchDelete` `batchDeleteAtomic`.
+- default: 2000 (2 seconds)
+
+#### tikv.rawkv.scan_timeout_in_ms
+- RawKV scan timeout in milliseconds. This parameter controls the timeout of `batchScan` `scan` `scanPrefix`.
+- default: 10000 (10 seconds)
+
+#### tikv.rawkv.clean_timeout_in_ms
+- RawKV clean timeout in milliseconds. This parameter controls the timeout of `deleteRange` `deletePrefix`.
+- default: 600000 (10 minutes)
\ No newline at end of file
diff --git a/docs/dev-guide.md b/docs/dev-guide.md
new file mode 100644
index 0000000000..1d66832d32
--- /dev/null
+++ b/docs/dev-guide.md
@@ -0,0 +1,14 @@
+
+## How to build
+
+```
+mvn clean package -Dmaven.test.skip=true
+```
+
+## How to run test
+
+```
+export RAWKV_PD_ADDRESSES=127.0.0.1:2379
+export TXNKV_PD_ADDRESSES=127.0.0.1:2379
+mvn clean test
+```
\ No newline at end of file
diff --git a/docs/monitoring.md b/docs/monitoring.md
new file mode 100644
index 0000000000..061a9299d4
--- /dev/null
+++ b/docs/monitoring.md
@@ -0,0 +1,33 @@
+## Java Client Metrics
+
+Client Java supports exporting metrics to Prometheus using poll mode and viewing on Grafana. The following steps shows how to enable this function.
+
+### Step 1: Enable metrics exporting
+
+- set the config `tikv.metrics.enable` to `true`
+- call TiConfiguration.setMetricsEnable(true)
+
+### Step 2: Set the metrics port
+
+- set the config `tikv.metrics.port`
+- call TiConfiguration.setMetricsPort
+
+Default port is 3140.
+
+### Step 3: Config Prometheus
+
+Add the following config to `conf/prometheus.yml` and restart Prometheus.
+
+```yaml
+- job_name: "tikv-client"
+    honor_labels: true
+    static_configs:
+    - targets:
+        - '127.0.0.1:3140'
+        - '127.0.0.2:3140'
+        - '127.0.0.3:3140'
+```
+
+### Step 4: Config Grafana
+
+Import the [Client-Java-Summary dashboard config](/metrics/grafana/client_java_summary.json) to Grafana.
\ No newline at end of file