diff --git a/src/RpcClient/RpcClient.cs b/src/RpcClient/RpcClient.cs
index 6d81f9b86..32442ba98 100644
--- a/src/RpcClient/RpcClient.cs
+++ b/src/RpcClient/RpcClient.cs
@@ -359,7 +359,7 @@ public async Task<RpcInvokeResult> InvokeFunctionAsync(string scriptHash, string
         /// </summary>
         public async Task<RpcInvokeResult> InvokeScriptAsync(byte[] script, params Signer[] signers)
         {
-            List<JObject> parameters = new List<JObject> { script.ToHexString() };
+            List<JObject> parameters = new List<JObject> { Convert.ToBase64String(script) };
             if (signers.Length > 0)
             {
                 parameters.Add(signers.Select(p => p.ToJson()).ToArray());
diff --git a/src/RpcServer/RpcServer.SmartContract.cs b/src/RpcServer/RpcServer.SmartContract.cs
index 2acec7012..2cc910851 100644
--- a/src/RpcServer/RpcServer.SmartContract.cs
+++ b/src/RpcServer/RpcServer.SmartContract.cs
@@ -65,7 +65,7 @@ private JObject GetInvokeResult(byte[] script, UInt160 sender = null, Signers si
         {
             using ApplicationEngine engine = ApplicationEngine.Run(script, container: signers, gas: settings.MaxGasInvoke);
             JObject json = new JObject();
-            json["script"] = script.ToHexString();
+            json["script"] = Convert.ToBase64String(script);
             json["state"] = engine.State;
             json["gasconsumed"] = engine.GasConsumed.ToString();
             try
@@ -116,7 +116,7 @@ protected virtual JObject InvokeFunction(JArray _params)
         [RpcMethod]
         protected virtual JObject InvokeScript(JArray _params)
         {
-            byte[] script = _params[0].AsString().HexToBytes();
+            byte[] script = Convert.FromBase64String(_params[0].AsString());
             UInt160 sender = _params.Count >= 2 ? AddressToScriptHash(_params[1].AsString()) : null;
             Signers signers = _params.Count >= 3 ? SignersFromJson((JArray)_params[2]) : null;
             return GetInvokeResult(script, sender, signers);
diff --git a/src/RpcServer/RpcServer.Wallet.cs b/src/RpcServer/RpcServer.Wallet.cs
index 021893d5a..21e07d0d8 100644
--- a/src/RpcServer/RpcServer.Wallet.cs
+++ b/src/RpcServer/RpcServer.Wallet.cs
@@ -182,7 +182,7 @@ private void ProcessInvokeWithWallet(JObject result, UInt160 sender = null, Sign
 
                 if (witnessSigners.Count() > 0)
                 {
-                    tx = wallet.MakeTransaction(result["script"].AsString().HexToBytes(), sender, witnessSigners);
+                    tx = wallet.MakeTransaction(Convert.FromBase64String(result["script"].AsString()), sender, witnessSigners);
                     ContractParametersContext context = new ContractParametersContext(tx);
                     wallet.Sign(context);
                     if (context.Completed)
diff --git a/tests/Neo.Network.RPC.Tests/RpcTestCases.json b/tests/Neo.Network.RPC.Tests/RpcTestCases.json
index e3f03d4df..6c89e441f 100644
--- a/tests/Neo.Network.RPC.Tests/RpcTestCases.json
+++ b/tests/Neo.Network.RPC.Tests/RpcTestCases.json
@@ -747,14 +747,14 @@
     "Request": {
       "jsonrpc": "2.0",
       "method": "invokescript",
-      "params": [ "10c30c046e616d650c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c0673796d626f6c0c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c08646563696d616c730c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c0b746f74616c537570706c790c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b52" ],
+      "params": [ "EMMMBG5hbWUMFDt9NxHG8Mz5sdypA9G/odiW8SOMQWJ9W1IQwwwGc3ltYm9sDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtSEMMMCGRlY2ltYWxzDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtSEMMMC3RvdGFsU3VwcGx5DBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtS" ],
       "id": 1
     },
     "Response": {
       "jsonrpc": "2.0",
       "id": 1,
       "result": {
-        "script": "10c30c046e616d650c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c0673796d626f6c0c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c08646563696d616c730c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5210c30c0b746f74616c537570706c790c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b52",
+        "script": "EMMMBG5hbWUMFDt9NxHG8Mz5sdypA9G/odiW8SOMQWJ9W1IQwwwGc3ltYm9sDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtSEMMMCGRlY2ltYWxzDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtSEMMMC3RvdGFsU3VwcGx5DBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtS",
         "state": "HALT",
         "gasconsumed": "5061560",
         "stack": [
@@ -933,14 +933,14 @@
     "Request": {
       "jsonrpc": "2.0",
       "method": "invokescript",
-      "params": [ "10c30c08646563696d616c730c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b52" ],
+      "params": [ "EMMMCGRlY2ltYWxzDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtS" ],
       "id": 1
     },
     "Response": {
       "jsonrpc": "2.0",
       "id": 1,
       "result": {
-        "script": "10c30c08646563696d616c730c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b52",
+        "script": "EMMMCGRlY2ltYWxzDBQ7fTcRxvDM+bHcqQPRv6HYlvEjjEFifVtS",
         "state": "HALT",
         "gasconsumed": "5061560",
         "stack": [
diff --git a/tests/Neo.Network.RPC.Tests/UT_RpcClient.cs b/tests/Neo.Network.RPC.Tests/UT_RpcClient.cs
index dd08d6024..bc95c6beb 100644
--- a/tests/Neo.Network.RPC.Tests/UT_RpcClient.cs
+++ b/tests/Neo.Network.RPC.Tests/UT_RpcClient.cs
@@ -283,7 +283,7 @@ public async Task TestInvokeFunction()
         public async Task TestInvokeScript()
         {
             var test = TestUtils.RpcTestCases.Find(p => p.Name == nameof(rpc.InvokeScriptAsync).ToLower());
-            var result = await rpc.InvokeScriptAsync(test.Request.Params[0].AsString().HexToBytes());
+            var result = await rpc.InvokeScriptAsync(Convert.FromBase64String(test.Request.Params[0].AsString()));
             Assert.AreEqual(test.Response.Result.ToString(), result.ToJson().ToString());
         }
 
diff --git a/tests/Neo.Network.RPC.Tests/UT_TransactionManager.cs b/tests/Neo.Network.RPC.Tests/UT_TransactionManager.cs
index c5d8a1d4b..32744c2e2 100644
--- a/tests/Neo.Network.RPC.Tests/UT_TransactionManager.cs
+++ b/tests/Neo.Network.RPC.Tests/UT_TransactionManager.cs
@@ -10,7 +10,6 @@
 using Neo.SmartContract.Native;
 using Neo.VM;
 using Neo.Wallets;
-using Neo.Wallets.NEP6;
 using System;
 using System.Linq;
 using System.Numerics;
@@ -112,11 +111,11 @@ public static void MockInvokeScript(Mock<RpcClient> mockClient, byte[] script, p
             {
                 Stack = parameters.Select(p => p.ToStackItem()).ToArray(),
                 GasConsumed = "100",
-                Script = script.ToHexString(),
+                Script = Convert.ToBase64String(script),
                 State = VMState.HALT
             };
 
-            mockClient.Setup(p => p.RpcSendAsync("invokescript", It.Is<JObject[]>(j => j[0].AsString() == script.ToHexString())))
+            mockClient.Setup(p => p.RpcSendAsync("invokescript", It.Is<JObject[]>(j => j[0].AsString() == Convert.ToBase64String(script))))
                 .ReturnsAsync(result.ToJson())
                 .Verifiable();
         }