diff --git a/README.md b/README.md
index 5b33e2e..40ca981 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,12 @@ $ rails daemons:sync:start
 # run `rails daemons:sync:status` to see status
 ```
 
+## Event Log Processor
+
+Create a yaml file with `.yml` suffix in `config/customs`, see `config/customs/event_log.yml.sample` for more detail. For example, your file name is `contracts.yml`, you can run `bundle exec rake event_log:create[contracts]` to create your table and now restart sync task `bundle exec rake daemons:sync:restart` to listen your contact 😝
+
+We'll both use `address` and `topics` to select the logs by jsonrpc interface [`getLogs`](https://docs.nervos.org/cita/#/rpc_guide/rpc?id=getlogs)
+
 ## Deploy
 
 You can deploy this via [mina](https://github.com/mina-deploy/mina)
diff --git a/lib/tasks/event_log.rake b/lib/tasks/event_log.rake
index 2ea6721..399c9a4 100644
--- a/lib/tasks/event_log.rake
+++ b/lib/tasks/event_log.rake
@@ -1,6 +1,6 @@
 namespace :event_log do
   desc "create a event log model and migration"
   task :create, [:file_name] => :environment do |task, args|
-    puts EventLogProcess.new(args[:file_name]).create_table
+    puts EventLogProcessor.new(args[:file_name]).create_table
   end
 end