diff --git a/server/web3spider/services/blockchain.js b/server/web3spider/services/blockchain.js
index be9fcfd..e150d74 100644
--- a/server/web3spider/services/blockchain.js
+++ b/server/web3spider/services/blockchain.js
@@ -100,7 +100,7 @@ class BlockChain {
         const {err, row} = await conn.ormSelectOne(
           't_parameter',
           [
-            ['name', 'first_block_number']
+            ['name', 'first_block_number.' + await this.getNetId() + '.']
           ]
         );
         if (!err && row) {
diff --git a/server/web3spider/services/factory.js b/server/web3spider/services/factory.js
index 5a9dbb0..27dc216 100644
--- a/server/web3spider/services/factory.js
+++ b/server/web3spider/services/factory.js
@@ -12,6 +12,8 @@ function add(clsNames, modName) {
 }
 
 function init() {
+  add('BlockChain', 'blockchain');
+  add('EventProcess', 'event_process');
 }
 
 function create(name, session) {