diff --git a/crates/rooch-db/src/lib.rs b/crates/rooch-db/src/lib.rs
index 428cdbfd34..c907d662d2 100644
--- a/crates/rooch-db/src/lib.rs
+++ b/crates/rooch-db/src/lib.rs
@@ -34,12 +34,13 @@ impl RoochDB {
                 None,
             )?))?;
 
-        let rooch_store = RoochStore::new(StoreInstance::new_db_instance(RocksDB::new(
-            rooch_store_dir,
-            rooch_store::StoreMeta::get_column_family_names().to_vec(),
-            config.rocksdb_config(false),
-            None,
-        )?))?;
+        let rooch_store =
+            RoochStore::new_with_instance(StoreInstance::new_db_instance(RocksDB::new(
+                rooch_store_dir,
+                rooch_store::StoreMeta::get_column_family_names().to_vec(),
+                config.rocksdb_config(false),
+                None,
+            )?))?;
 
         let indexer_store = IndexerStore::new(indexer_store_dir.clone())?;
         let indexer_reader = IndexerReader::new(indexer_store_dir)?;
diff --git a/crates/rooch-sequencer/src/actor/sequencer.rs b/crates/rooch-sequencer/src/actor/sequencer.rs
index 304a510046..b8fa1b2450 100644
--- a/crates/rooch-sequencer/src/actor/sequencer.rs
+++ b/crates/rooch-sequencer/src/actor/sequencer.rs
@@ -88,10 +88,11 @@ impl SequencerActor {
 
         let sequencer_info =
             SequencerInfo::new(tx.sequence_info.tx_order, self.tx_accumulator.get_info());
-        self.rooch_store.save_sequencer_info(sequencer_info)?;
+        self.rooch_store
+            .save_sequencer_info(sequencer_info.clone())?;
         self.rooch_store.save_transaction(tx.clone())?;
         info!("sequencer tx: {} order: {:?}", hash, tx_order);
-        self.last_sequencer_info.last_order = tx_order;
+        self.last_sequencer_info = sequencer_info;
         Ok(tx)
     }
 }
diff --git a/crates/rooch-store/src/lib.rs b/crates/rooch-store/src/lib.rs
index 5a6d2c243b..5d0e7515ef 100644
--- a/crates/rooch-store/src/lib.rs
+++ b/crates/rooch-store/src/lib.rs
@@ -6,16 +6,22 @@ use crate::meta_store::{MetaDBStore, MetaStore};
 use crate::transaction_store::{TransactionDBStore, TransactionStore};
 use accumulator::AccumulatorTreeStore;
 use anyhow::Result;
+use moveos_config::store_config::RocksdbConfig;
+use moveos_config::DataDirPath;
 use moveos_types::h256::H256;
 use once_cell::sync::Lazy;
+use raw_store::rocks::RocksDB;
 use raw_store::{ColumnFamilyName, StoreInstance};
 use rooch_types::sequencer::SequencerInfo;
 use rooch_types::transaction::LedgerTransaction;
 use std::fmt::{Debug, Display, Formatter};
+use std::path::Path;
 use std::sync::Arc;
 
 pub mod accumulator_store;
 pub mod meta_store;
+#[cfg(test)]
+mod tests;
 pub mod transaction_store;
 
 // pub const DEFAULT_PREFIX_NAME: ColumnFamilyName = "default";
@@ -52,7 +58,17 @@ pub struct RoochStore {
 }
 
 impl RoochStore {
-    pub fn new(instance: StoreInstance) -> Result<Self> {
+    pub fn new(db_path: &Path) -> Result<Self> {
+        let instance = StoreInstance::new_db_instance(RocksDB::new(
+            db_path,
+            StoreMeta::get_column_family_names().to_vec(),
+            RocksdbConfig::default(),
+            None,
+        )?);
+        Self::new_with_instance(instance)
+    }
+
+    pub fn new_with_instance(instance: StoreInstance) -> Result<Self> {
         let store = Self {
             transaction_store: TransactionDBStore::new(instance.clone()),
             meta_store: MetaDBStore::new(instance.clone()),
@@ -63,6 +79,12 @@ impl RoochStore {
         Ok(store)
     }
 
+    pub fn mock_rooch_store() -> Result<(Self, DataDirPath)> {
+        let tmpdir = moveos_config::temp_dir();
+        //The testcases should hold the tmpdir to prevent the tmpdir from being deleted.
+        Ok((Self::new(tmpdir.path())?, tmpdir))
+    }
+
     pub fn get_transaction_store(&self) -> &TransactionDBStore {
         &self.transaction_store
     }
diff --git a/crates/rooch-store/src/tests/mod.rs b/crates/rooch-store/src/tests/mod.rs
new file mode 100644
index 0000000000..cb1dbc2af8
--- /dev/null
+++ b/crates/rooch-store/src/tests/mod.rs
@@ -0,0 +1,4 @@
+// Copyright (c) RoochNetwork
+// SPDX-License-Identifier: Apache-2.0
+
+mod test_accumulator;
diff --git a/crates/rooch-store/src/tests/test_accumulator.rs b/crates/rooch-store/src/tests/test_accumulator.rs
new file mode 100644
index 0000000000..224b9f2faa
--- /dev/null
+++ b/crates/rooch-store/src/tests/test_accumulator.rs
@@ -0,0 +1,25 @@
+// Copyright (c) RoochNetwork
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::RoochStore;
+use accumulator::node_index::NodeIndex;
+use accumulator::{AccumulatorNode, AccumulatorTreeStore};
+use moveos_types::h256::H256;
+
+#[test]
+fn test_accumulator_store() {
+    let (rooch_store, _) = RoochStore::mock_rooch_store().unwrap();
+
+    let acc_node = AccumulatorNode::new_leaf(NodeIndex::from_inorder_index(1), H256::random());
+    let node_hash = acc_node.hash();
+    rooch_store
+        .transaction_accumulator_store
+        .save_node(acc_node.clone())
+        .unwrap();
+    let acc_node2 = rooch_store
+        .transaction_accumulator_store
+        .get_node(node_hash)
+        .unwrap()
+        .unwrap();
+    assert_eq!(acc_node, acc_node2);
+}