diff --git a/consensus/forks/meerevmfork.go b/consensus/forks/meerevmfork.go
index 0b56a560..d4ae17fb 100644
--- a/consensus/forks/meerevmfork.go
+++ b/consensus/forks/meerevmfork.go
@@ -82,3 +82,10 @@ func IsMeerEVMUTXOHeight(mainHeight int64) bool {
 	}
 	return mainHeight >= MeerEVMUTXOUnlockMainHeight
 }
+
+func IsBeforeMeerEVMForkHeight(mainHeight int64) bool {
+	if params.ActiveNetParams.Net != protocol.MainNet {
+		return false
+	}
+	return mainHeight < MeerEVMForkMainHeight
+}
diff --git a/core/blockchain/api.go b/core/blockchain/api.go
index a7ec25d7..e94fb3db 100644
--- a/core/blockchain/api.go
+++ b/core/blockchain/api.go
@@ -477,6 +477,8 @@ func (api *PublicBlockAPI) GetStateRoot(order int64, verbose *bool) (interface{}
 	} else {
 		if order > mainOrder {
 			return nil, fmt.Errorf("Order is too big")
+		} else if order < 0 {
+			return nil, fmt.Errorf("Order is too small")
 		}
 	}
 	vb := false
diff --git a/core/blockchain/blockindex.go b/core/blockchain/blockindex.go
index fc2fab7b..7dcc164d 100644
--- a/core/blockchain/blockindex.go
+++ b/core/blockchain/blockindex.go
@@ -198,11 +198,14 @@ func (b *BlockChain) GetMeerBlock(order uint) (interface{}, error) {
 	}
 	number := uint64(0)
 	for i := uint(order); i > 0; i-- {
-		bh := b.bd.GetBlockHashByOrder(i)
-		if bh == nil {
+		ib := b.bd.GetBlockByOrder(i)
+		if ib == nil {
 			return nil, fmt.Errorf("No meer block number:%d", i)
 		}
-		num := b.VMService().GetBlockID(bh)
+		if forks.IsBeforeMeerEVMForkHeight(int64(ib.GetHeight())) {
+			break
+		}
+		num := b.VMService().GetBlockID(ib.GetHash())
 		if num != 0 {
 			number = num
 			break