diff --git a/README.md b/README.md
index d152d5a..2f9701e 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ Powred by [BlockVision](https://blockvision.org/) & [SuiVision](https://suivisio
 + Customized request method `SuiCall`.
 + Unsigned methods can be executed without loading your keystore file.
 + Provide the method `SignAndExecuteTransactionBlock` to send signed transaction.
++ Support subscriptions to events or transactions via websockets.
 
 ## Quick Start
 
diff --git a/common/wsconn/subscription.go b/common/wsconn/subscription.go
new file mode 100644
index 0000000..b71fcee
--- /dev/null
+++ b/common/wsconn/subscription.go
@@ -0,0 +1,9 @@
+package wsconn
+
+type SubscriptionResp struct {
+	Jsonrpc string `json:"jsonrpc"`
+	Result  int64  `json:"result"`
+	Id      int64  `json:"id"`
+}
+
+
diff --git a/common/wsconn/wsconn.go b/common/wsconn/wsconn.go
new file mode 100644
index 0000000..424076d
--- /dev/null
+++ b/common/wsconn/wsconn.go
@@ -0,0 +1,91 @@
+package wsconn
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/block-vision/sui-go-sdk/models"
+	"github.com/gorilla/websocket"
+	"github.com/tidwall/gjson"
+	"log"
+	"time"
+)
+
+type WsConn struct {
+	Conn  *websocket.Conn
+	wsUrl string
+}
+
+type CallOp struct {
+	Method string
+	Params []interface{}
+}
+
+func NewWsConn(wsUrl string) *WsConn {
+	dialer := websocket.Dialer{}
+	conn, _, err := dialer.Dial(wsUrl, nil)
+
+	if err != nil {
+		log.Fatal("Error connecting to Websocket Server:", err, wsUrl)
+	}
+
+	return &WsConn{
+		Conn:  conn,
+		wsUrl: wsUrl,
+	}
+}
+
+func (w *WsConn) Call(ctx context.Context, op CallOp, receiveMsgCh chan []byte) error {
+	jsonRPCCall := models.JsonRPCRequest{
+		JsonRPC: "2.0",
+		ID:      time.Now().UnixMilli(),
+		Method:  op.Method,
+		Params:  op.Params,
+	}
+
+	callBytes, err := json.Marshal(jsonRPCCall)
+	if err != nil {
+		return err
+	}
+
+	err = w.Conn.WriteMessage(websocket.TextMessage, callBytes)
+	if nil != err {
+		return err
+	}
+
+	_, messageData, err := w.Conn.ReadMessage()
+	if nil != err {
+		return err
+	}
+
+	var rsp SubscriptionResp
+	if gjson.ParseBytes(messageData).Get("error").Exists() {
+		return fmt.Errorf(gjson.ParseBytes(messageData).Get("error").String())
+	}
+
+	err = json.Unmarshal([]byte(gjson.ParseBytes(messageData).String()), &rsp)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("establish successfully, subscriptionID: %d, Waiting to accept data...\n", rsp.Result)
+
+	go func(conn *websocket.Conn) {
+		for {
+			messageType, messageData, err := conn.ReadMessage()
+			if nil != err {
+				log.Println(err)
+				break
+			}
+			switch messageType {
+			case websocket.TextMessage:
+				receiveMsgCh <- messageData
+
+			default:
+				continue
+			}
+		}
+	}(w.Conn)
+
+	return nil
+}
diff --git a/constant/rpc.go b/constant/rpc.go
index d9ea329..c44b6b1 100644
--- a/constant/rpc.go
+++ b/constant/rpc.go
@@ -5,4 +5,9 @@ const (
 	BvMainnetEndpoint  = "https://sui-mainnet-endpoint.blockvision.org"
 	SuiTestnetEndpoint = "https://fullnode.testnet.sui.io"
 	SuiMainnetEndpoint = "https://fullnode.mainnet.sui.io"
+
+	WssBvTestnetEndpoint  = "wss://sui-testnet-endpoint.blockvision.org/websocket"
+	WssBvMainnetEndpoint  = "wss://sui-mainnet-endpoint.blockvision.org/websocket"
+	WssSuiTestnetEndpoint = "wss://fullnode.testnet.sui.io"
+	WssSuiMainnetEndpoint = "wss://fullnode.mainnet.sui.io"
 )
diff --git a/examples/subscribe/main.go b/examples/subscribe/main.go
new file mode 100644
index 0000000..59b1d84
--- /dev/null
+++ b/examples/subscribe/main.go
@@ -0,0 +1,63 @@
+package main
+
+import (
+	"context"
+	"github.com/block-vision/sui-go-sdk/constant"
+	"github.com/block-vision/sui-go-sdk/models"
+	"github.com/block-vision/sui-go-sdk/sui"
+	"github.com/block-vision/sui-go-sdk/utils"
+)
+
+func main() {
+	go SubscribeEvent()
+	go SubscribeTransaction()
+	select {}
+}
+
+func SubscribeEvent() {
+	var ctx = context.Background()
+	var cli = sui.NewSuiWebsocketClient(constant.WssBvTestnetEndpoint)
+
+	receiveMsgCh := make(chan models.SuiEventResponse, 10)
+	err := cli.SubscribeEvent(ctx, models.SuiXSubscribeEventsRequest{
+		SuiEventFilter: map[string]interface{}{
+			"All": []string{},
+		},
+	}, receiveMsgCh)
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+		select {
+		case msg := <-receiveMsgCh:
+			utils.PrettyPrint(msg)
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+func SubscribeTransaction() {
+	var ctx = context.Background()
+	var cli = sui.NewSuiWebsocketClient(constant.WssBvTestnetEndpoint)
+
+	receiveMsgCh := make(chan models.SuiEffects, 10)
+	err := cli.SubscribeTransaction(ctx, models.SuiXSubscribeTransactionsRequest{
+		TransactionFilter: models.TransactionFilterByFromAddress{
+			FromAddress: "0x0000000000000000000000000000000000000000000000000000000000000000",
+		},
+	}, receiveMsgCh)
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+		select {
+		case msg := <-receiveMsgCh:
+			utils.PrettyPrint(msg)
+		case <-ctx.Done():
+			return
+		}
+	}
+}
diff --git a/go.mod b/go.mod
index 5949b3b..73aa9dd 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.20
 
 require (
 	github.com/go-playground/validator/v10 v10.12.0
+	github.com/gorilla/websocket v1.5.0
 	github.com/tidwall/gjson v1.14.4
 	github.com/tyler-smith/go-bip39 v1.1.0
 	golang.org/x/crypto v0.8.0
diff --git a/go.sum b/go.sum
index c42e93e..50ac540 100644
--- a/go.sum
+++ b/go.sum
@@ -8,6 +8,8 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
 github.com/go-playground/validator/v10 v10.12.0 h1:E4gtWgxWxp8YSxExrQFv5BpCahla0PVF2oTTEYaWQGI=
 github.com/go-playground/validator/v10 v10.12.0/go.mod h1:hCAPuzYvKdP33pxWa+2+6AIKXEKqjIUyqsNCtbsSJrA=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/leodido/go-urn v1.2.2 h1:7z68G0FCGvDk646jz1AelTYNYWrTNm0bEcFAo147wt4=
 github.com/leodido/go-urn v1.2.2/go.mod h1:kUaIbLZWttglzwNuG0pgsh5vuV6u2YcGBYz1hIPjtOQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
diff --git a/models/read_transaction.go b/models/read_transaction.go
index 5e11fd0..b5b49d1 100644
--- a/models/read_transaction.go
+++ b/models/read_transaction.go
@@ -216,6 +216,44 @@ type SuiTransactionBlockResponseQuery struct {
 
 type TransactionFilter map[string]interface{}
 
+// TransactionFilterByFromAddress is a filter for from address
+type TransactionFilterByFromAddress struct {
+	FromAddress string `json:"FromAddress"`
+}
+
+// TransactionFilterByToAddress is a filter for to address
+type TransactionFilterByToAddress struct {
+	ToAddress string `json:"ToAddress"`
+}
+
+// TransactionFilterByInputObject is a filter for input objects
+type TransactionFilterByInputObject struct {
+	// InputObject is the id of the object
+	InputObject string `json:"InputObject"`
+}
+
+// TransactionFilterByChangedObjectFilter is a filter for changed objects
+type TransactionFilterByChangedObjectFilter struct {
+	// ChangedObject is a filter for changed objects
+	ChangedObject string `json:"ChangedObject"`
+}
+
+// TransactionFilterByMoveFunction is a filter for move functions
+type TransactionFilterByMoveFunction struct {
+	MoveFunction MoveFunction `json:"MoveFunction"`
+}
+
+type MoveFunction struct {
+	Package  string  `json:"package"`
+	Module   *string `json:"module"`
+	Function *string `json:"function"`
+}
+
+type SuiXSubscribeTransactionsRequest struct {
+	// the transaction query criteria.
+	TransactionFilter interface{} `json:"filter"`
+}
+
 type SuiXQueryTransactionBlocksRequest struct {
 	SuiTransactionBlockResponseQuery SuiTransactionBlockResponseQuery
 	// optional paging cursor
@@ -246,3 +284,8 @@ type SuiDevInspectTransactionBlockRequest struct {
 	// The epoch to perform the call. Will be set from the system state object if not provided
 	Epoch string `json:"epoch"`
 }
+
+type SuiXSubscribeEventsRequest struct {
+	// the event query criteria.
+	SuiEventFilter interface{} `json:"suiEventFilter"`
+}
diff --git a/models/request.go b/models/request.go
deleted file mode 100644
index 6ff43df..0000000
--- a/models/request.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package models
-
-type Request struct {
-	Name       string
-	HttpMethod string
-	HttpPath   string
-}
diff --git a/sui/subscribe_api.go b/sui/subscribe_api.go
new file mode 100644
index 0000000..c2ce3be
--- /dev/null
+++ b/sui/subscribe_api.go
@@ -0,0 +1,89 @@
+package sui
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/block-vision/sui-go-sdk/common/wsconn"
+	"github.com/block-vision/sui-go-sdk/models"
+	"github.com/tidwall/gjson"
+	"log"
+)
+
+type ISubscribeAPI interface {
+	SubscribeEvent(ctx context.Context, req models.SuiXSubscribeEventsRequest, msgCh chan models.SuiEventResponse) error
+	SubscribeTransaction(ctx context.Context, req models.SuiXSubscribeTransactionsRequest, msgCh chan models.SuiEffects) error
+}
+
+type suiSubscribeImpl struct {
+	conn *wsconn.WsConn
+}
+
+// SubscribeEvent implements the method `suix_subscribeEvent`, subscribe to a stream of Sui event.
+func (s *suiSubscribeImpl) SubscribeEvent(ctx context.Context, req models.SuiXSubscribeEventsRequest, msgCh chan models.SuiEventResponse) error {
+	rsp := make(chan []byte, 10)
+	err := s.conn.Call(ctx, wsconn.CallOp{
+		Method: "suix_subscribeEvent",
+		Params: []interface{}{
+			req.SuiEventFilter,
+		},
+	}, rsp)
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		for {
+			select {
+			case messageData := <-rsp:
+				var result models.SuiEventResponse
+				if gjson.ParseBytes(messageData).Get("error").Exists() {
+					log.Fatal(gjson.ParseBytes(messageData).Get("error").String())
+				}
+
+				err := json.Unmarshal([]byte(gjson.ParseBytes(messageData).Get("params.result").String()), &result)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				msgCh <- result
+			}
+		}
+	}()
+
+	return nil
+}
+
+// SubscribeTransaction implements the method `suix_subscribeTransaction`, subscribe to a stream of Sui transaction effects.
+func (s *suiSubscribeImpl) SubscribeTransaction(ctx context.Context, req models.SuiXSubscribeTransactionsRequest, msgCh chan models.SuiEffects) error {
+	rsp := make(chan []byte, 10)
+	err := s.conn.Call(ctx, wsconn.CallOp{
+		Method: "suix_subscribeTransaction",
+		Params: []interface{}{
+			req.TransactionFilter,
+		},
+	}, rsp)
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		for {
+			select {
+			case messageData := <-rsp:
+				var result models.SuiEffects
+				if gjson.ParseBytes(messageData).Get("error").Exists() {
+					log.Fatal(gjson.ParseBytes(messageData).Get("error").String())
+				}
+
+				err := json.Unmarshal([]byte(gjson.ParseBytes(messageData).Get("params.result").String()), &result)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				msgCh <- result
+			}
+		}
+	}()
+
+	return nil
+}
diff --git a/sui/websocket.go b/sui/websocket.go
new file mode 100644
index 0000000..c9f28fe
--- /dev/null
+++ b/sui/websocket.go
@@ -0,0 +1,28 @@
+// Copyright (c) BlockVision, Inc. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package sui
+
+import (
+	"github.com/block-vision/sui-go-sdk/common/wsconn"
+)
+
+// ISuiWebsocketAPI defines the subscription API related interface, and then implement it by the WebsocketClient.
+type ISuiWebsocketAPI interface {
+	ISubscribeAPI
+}
+
+// WebsocketClient implements SuiWebsocketAPI related interfaces.
+type WebsocketClient struct {
+	ISubscribeAPI
+}
+
+// NewSuiWebsocketClient instantiates the WebsocketClient to call the methods of each module.
+func NewSuiWebsocketClient(rpcUrl string) ISuiWebsocketAPI {
+	conn := wsconn.NewWsConn(rpcUrl)
+	return &WebsocketClient{
+		ISubscribeAPI: &suiSubscribeImpl{
+			conn: conn,
+		},
+	}
+}