diff --git a/app/rpc/apis.go b/app/rpc/apis.go
index 46657b8455..470179247c 100644
--- a/app/rpc/apis.go
+++ b/app/rpc/apis.go
@@ -10,6 +10,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/server"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/go-kit/kit/metrics/prometheus"
+	"github.com/okex/exchain/app/rpc/namespaces/eth/txpool"
 	evmtypes "github.com/okex/exchain/x/evm/types"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"github.com/spf13/viper"
@@ -33,6 +34,7 @@ const (
 	EthNamespace      = "eth"
 	PersonalNamespace = "personal"
 	NetNamespace      = "net"
+	TxpoolNamespace   = "txpool"
 
 	apiVersion = "1.0"
 )
@@ -77,6 +79,12 @@ func GetAPIs(clientCtx context.CLIContext, log log.Logger, keys ...ethsecp256k1.
 			Service:   net.NewAPI(clientCtx, log),
 			Public:    true,
 		},
+		{
+			Namespace: TxpoolNamespace,
+			Version:   apiVersion,
+			Service:   txpool.NewAPI(clientCtx, log, ethBackend),
+			Public:    true,
+		},
 	}
 
 	if viper.GetBool(FlagPersonalAPI) {
diff --git a/app/rpc/backend/backend.go b/app/rpc/backend/backend.go
index e73c8de74b..0a6bc8509d 100644
--- a/app/rpc/backend/backend.go
+++ b/app/rpc/backend/backend.go
@@ -43,6 +43,7 @@ type Backend interface {
 	PendingTransactionsByHash(target common.Hash) (*rpctypes.Transaction, error)
 	UserPendingTransactionsCnt(address string) (int, error)
 	UserPendingTransactions(address string, limit int) ([]*rpctypes.Transaction, error)
+	PendingAddressList() ([]string, error)
 
 	// Used by log filter
 	GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error)
@@ -235,7 +236,7 @@ func (b *EthermintBackend) PendingTransactions() ([]*rpctypes.Transaction, error
 		return nil, err
 	}
 
-	transactions := make([]*rpctypes.Transaction, 0)
+	transactions := make([]*rpctypes.Transaction, 0, len(pendingTxs.Txs))
 	for _, tx := range pendingTxs.Txs {
 		ethTx, err := rpctypes.RawTxToEthTx(b.clientCtx, tx)
 		if err != nil {
@@ -256,7 +257,7 @@ func (b *EthermintBackend) PendingTransactions() ([]*rpctypes.Transaction, error
 }
 
 func (b *EthermintBackend) PendingTransactionCnt() (int, error) {
-	result, err := b.clientCtx.Client.UnconfirmedTxs(-1)
+	result, err := b.clientCtx.Client.NumUnconfirmedTxs()
 	if err != nil {
 		return 0, err
 	}
@@ -276,8 +277,7 @@ func (b *EthermintBackend) UserPendingTransactions(address string, limit int) ([
 	if err != nil {
 		return nil, err
 	}
-
-	transactions := make([]*rpctypes.Transaction, len(result.Txs))
+	transactions := make([]*rpctypes.Transaction, 0, len(result.Txs))
 	for _, tx := range result.Txs {
 		ethTx, err := rpctypes.RawTxToEthTx(b.clientCtx, tx)
 		if err != nil {
@@ -297,6 +297,14 @@ func (b *EthermintBackend) UserPendingTransactions(address string, limit int) ([
 	return transactions, nil
 }
 
+func (b *EthermintBackend) PendingAddressList() ([]string, error) {
+	res, err := b.clientCtx.Client.GetAddressList()
+	if err != nil {
+		return nil, err
+	}
+	return res.Addresses, nil
+}
+
 // PendingTransactions returns the transaction that is in the transaction pool
 // and have a from address that is one of the accounts this node manages.
 func (b *EthermintBackend) PendingTransactionsByHash(target common.Hash) (*rpctypes.Transaction, error) {
diff --git a/app/rpc/namespaces/eth/txpool/api.go b/app/rpc/namespaces/eth/txpool/api.go
new file mode 100644
index 0000000000..63b802a23d
--- /dev/null
+++ b/app/rpc/namespaces/eth/txpool/api.go
@@ -0,0 +1,102 @@
+package txpool
+
+import (
+	"fmt"
+	clientcontext "github.com/cosmos/cosmos-sdk/client/context"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	rpctypes "github.com/okex/exchain/app/rpc/types"
+
+	"github.com/okex/exchain/app/rpc/backend"
+	"github.com/tendermint/tendermint/libs/log"
+)
+
+// PublicTxPoolAPI offers and API for the transaction pool. It only operates on data that is non confidential.
+type PublicTxPoolAPI struct {
+	clientCtx clientcontext.CLIContext
+	logger    log.Logger
+	backend backend.Backend
+}
+
+// NewPublicTxPoolAPI creates a new tx pool service that gives information about the transaction pool.
+func NewAPI(clientCtx clientcontext.CLIContext, log log.Logger, backend backend.Backend) *PublicTxPoolAPI {
+	api := &PublicTxPoolAPI{
+		clientCtx: clientCtx,
+		backend:   backend,
+		logger:    log.With("module", "json-rpc", "namespace", "txpool"),
+	}
+	return api
+}
+
+// Content returns the transactions contained within the transaction pool.
+func (s *PublicTxPoolAPI) Content() map[string]map[string]map[string]*rpctypes.Transaction {
+	addressList, err := s.backend.PendingAddressList()
+	if err != nil {
+		s.logger.Error("txpool.Content addressList err: ", err)
+	}
+	content := map[string]map[string]map[string]*rpctypes.Transaction{
+		"queued":  make(map[string]map[string]*rpctypes.Transaction),
+	}
+
+	for _, address := range addressList {
+		txs, err := s.backend.UserPendingTransactions(address, -1)
+		if err != nil {
+			s.logger.Error("txpool.Content err: ", err)
+		}
+
+		// Flatten the queued transactions
+		dump := make(map[string]*rpctypes.Transaction)
+		for _, tx := range txs {
+			dump[fmt.Sprintf("%d", tx.Nonce)] = tx
+		}
+		content["queued"][address] = dump
+	}
+
+	return content
+}
+
+// Status returns the number of pending and queued transaction in the pool.
+func (s *PublicTxPoolAPI) Status() map[string]hexutil.Uint {
+	numRes, err := s.backend.PendingTransactionCnt()
+	if err != nil {
+		s.logger.Error("txpool.Status err: ", err)
+		return nil
+	}
+	return map[string]hexutil.Uint{
+		"queued":  hexutil.Uint(numRes),
+	}
+}
+
+// Inspect retrieves the content of the transaction pool and flattens it into an
+// easily inspectable list.
+func (s *PublicTxPoolAPI) Inspect() map[string]map[string]map[string]string {
+	addressList, err := s.backend.PendingAddressList()
+	if err != nil {
+		s.logger.Error("txpool.Inspect addressList err: ", err)
+	}
+	content := map[string]map[string]map[string]string{
+		"queued":  make(map[string]map[string]string),
+	}
+	for _, address := range addressList {
+		txs, err := s.backend.UserPendingTransactions(address, -1)
+		if err != nil {
+			s.logger.Error("txpool.Inspect err: ", err)
+		}
+
+		// Define a formatter to flatten a transaction into a string
+		var format = func(tx *rpctypes.Transaction) string {
+			if to := tx.To; to != nil {
+				return fmt.Sprintf("%s: %v wei + %v gas × %v wei", tx.To.Hex(), tx.Value, tx.Gas, tx.GasPrice)
+			}
+			return fmt.Sprintf("contract creation: %v wei + %v gas × %v wei", tx.Value, tx.Gas, tx.GasPrice)
+		}
+
+		// Flatten the queued transactions
+		dump := make(map[string]string)
+		for _, tx := range txs {
+			dump[fmt.Sprintf("%d", tx.Nonce)] = format(tx)
+		}
+		content["queued"][address] = dump
+	}
+
+	return content
+}
diff --git a/go.mod b/go.mod
index dea45c9e94..62f72c7b47 100644
--- a/go.mod
+++ b/go.mod
@@ -56,7 +56,7 @@ require (
 )
 
 replace (
-	github.com/cosmos/cosmos-sdk => github.com/okex/cosmos-sdk v0.39.2-exchain6
+	github.com/cosmos/cosmos-sdk => github.com/okex/cosmos-sdk v0.39.2-exchain7
 	github.com/tendermint/iavl => github.com/okex/iavl v0.14.3-exchain
-	github.com/tendermint/tendermint => github.com/okex/tendermint v0.33.9-exchain4
+	github.com/tendermint/tendermint => github.com/okex/tendermint v0.33.9-exchain5
 )
diff --git a/go.sum b/go.sum
index 7678013aed..983501d980 100644
--- a/go.sum
+++ b/go.sum
@@ -499,12 +499,12 @@ github.com/nats-io/nkeys v0.1.3/go.mod h1:xpnFELMwJABBLVhffcfd1MZx6VsNRFpEugbxzi
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
 github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
-github.com/okex/cosmos-sdk v0.39.2-exchain6 h1:QERnXF6F8FTDkDKVEa2YSqNj66+Ef5Bkdc0Q/Bp/7TM=
-github.com/okex/cosmos-sdk v0.39.2-exchain6/go.mod h1:IvlniaZoJAtzILHgcmnfaJ5S125TYJWfJvGqY9zSXb4=
+github.com/okex/cosmos-sdk v0.39.2-exchain7 h1:ySr9r+EErCK31LakC+fkV6TsOYf6rG64PQlwhEqFOrs=
+github.com/okex/cosmos-sdk v0.39.2-exchain7/go.mod h1:IvlniaZoJAtzILHgcmnfaJ5S125TYJWfJvGqY9zSXb4=
 github.com/okex/iavl v0.14.3-exchain h1:kwRIwpFD6B8mDDqoaxeUN3Pg2GW0Vr+sA+b86renWcA=
 github.com/okex/iavl v0.14.3-exchain/go.mod h1:vHLYxU/zuxBmxxr1v+5Vnd/JzcIsyK17n9P9RDubPVU=
-github.com/okex/tendermint v0.33.9-exchain4 h1:PKXnawZpuczfcIwuaUuvqobv/qcKnW2e7Apk5Ei4TUM=
-github.com/okex/tendermint v0.33.9-exchain4/go.mod h1:EoGTbJUufUueNIigY3zyO6f7GOj29OdpFhuR8sxWdSU=
+github.com/okex/tendermint v0.33.9-exchain5 h1:8nSeDVzcO+g2bFUMcT34Wkv0x/yEPD/eAFoSVExicQk=
+github.com/okex/tendermint v0.33.9-exchain5/go.mod h1:EoGTbJUufUueNIigY3zyO6f7GOj29OdpFhuR8sxWdSU=
 github.com/oklog/oklog v0.3.2/go.mod h1:FCV+B7mhrz4o+ueLpx+KqkyXRGMWOYEvfiXtdGtbWGs=
 github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=