diff --git a/collector/cluster_node.go b/collector/cluster_node.go
index b1f9a3f..05c8a6f 100644
--- a/collector/cluster_node.go
+++ b/collector/cluster_node.go
@@ -10,6 +10,11 @@ var (
 		raftState:       newDescWithLabel("cluster_raft_state", "The current Raft state. The state name is indicated by the label 'state'. The value of this metric is always set to 1.", []string{"state"}),
 		raftTerm:        newDesc("cluster_raft_term", "The current Raft term."),
 		raftCommitIndex: newDesc("cluster_raft_commit_index", "The latest committed Raft log index."),
+
+		clusterRelayReceivedBytes:   newDescWithLabel("cluster_relay_received_bytes", "The total number of bytes received by the cluster relay.", []string{"node_name"}),
+		clusterRelaySentBytes:       newDescWithLabel("cluster_relay_sent_bytes", "The total number of bytes sent by the cluster relay.", []string{"node_name"}),
+		clusterRelayReceivedPackets: newDescWithLabel("cluster_relay_received_packets", "The total number of packets received by the cluster relay.", []string{"node_name"}),
+		clusterRelaySentPackets:     newDescWithLabel("cluster_relay_sent_packets", "The total number of packets sent by the cluster relay.", []string{"node_name"}),
 	}
 )
 
@@ -18,6 +23,11 @@ type SoraClusterMetrics struct {
 	raftState       *prometheus.Desc
 	raftTerm        *prometheus.Desc
 	raftCommitIndex *prometheus.Desc
+
+	clusterRelayReceivedBytes   *prometheus.Desc
+	clusterRelaySentBytes       *prometheus.Desc
+	clusterRelayReceivedPackets *prometheus.Desc
+	clusterRelaySentPackets     *prometheus.Desc
 }
 
 func (m *SoraClusterMetrics) Describe(ch chan<- *prometheus.Desc) {
@@ -25,9 +35,13 @@ func (m *SoraClusterMetrics) Describe(ch chan<- *prometheus.Desc) {
 	ch <- m.raftState
 	ch <- m.raftTerm
 	ch <- m.raftCommitIndex
+	ch <- m.clusterRelayReceivedBytes
+	ch <- m.clusterRelaySentBytes
+	ch <- m.clusterRelayReceivedPackets
+	ch <- m.clusterRelaySentPackets
 }
 
-func (m *SoraClusterMetrics) Collect(ch chan<- prometheus.Metric, nodeList []soraClusterNode, report soraClusterReport) {
+func (m *SoraClusterMetrics) Collect(ch chan<- prometheus.Metric, nodeList []soraClusterNode, report soraClusterReport, clusterRelaies []soraClusterRelay) {
 	for _, node := range nodeList {
 		value := 0.0
 		if node.Connected {
@@ -42,4 +56,11 @@ func (m *SoraClusterMetrics) Collect(ch chan<- prometheus.Metric, nodeList []sor
 	ch <- newGauge(m.raftState, 1.0, report.RaftState)
 	ch <- newCounter(m.raftTerm, float64(report.RaftTerm))
 	ch <- newCounter(m.raftCommitIndex, float64(report.RaftCommitIndex))
+
+	for _, relayNode := range clusterRelaies {
+		ch <- newCounter(m.clusterRelayReceivedBytes, float64(relayNode.TotalReceivedByteSize), relayNode.NodeName)
+		ch <- newCounter(m.clusterRelaySentBytes, float64(relayNode.TotalSentByteSize), relayNode.NodeName)
+		ch <- newCounter(m.clusterRelayReceivedPackets, float64(relayNode.TotalReceived), relayNode.NodeName)
+		ch <- newCounter(m.clusterRelaySentPackets, float64(relayNode.TotalSent), relayNode.NodeName)
+	}
 }
diff --git a/collector/collector.go b/collector/collector.go
index ccdb70c..a92a227 100644
--- a/collector/collector.go
+++ b/collector/collector.go
@@ -212,7 +212,7 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) {
 		c.ErlangVMMetrics.Collect(ch, report.ErlangVMReport)
 	}
 	if c.EnableSoraClusterMetrics {
-		c.SoraClusterMetrics.Collect(ch, nodeList, report.ClusterReport)
+		c.SoraClusterMetrics.Collect(ch, nodeList, report.ClusterReport, report.ClusterRelay)
 	}
 }
 
diff --git a/collector/sora_api.go b/collector/sora_api.go
index 74121dd..7283cbe 100644
--- a/collector/sora_api.go
+++ b/collector/sora_api.go
@@ -8,6 +8,7 @@ type soraGetStatsReport struct {
 	SoraConnectionErrorReport soraConnectionErrorReport `json:"error,omitempty"`
 	ErlangVMReport            erlangVMReport            `json:"erlang_vm,omitempty"`
 	ClusterReport             soraClusterReport         `json:"cluster,omitempty"`
+	ClusterRelay              []soraClusterRelay        `json:"cluster_relay,omitempty"`
 }
 
 type soraConnectionReport struct {
@@ -142,6 +143,14 @@ type soraClusterNode struct {
 	Connected       bool   `json:"connected"`
 }
 
+type soraClusterRelay struct {
+	NodeName              string `json:"node_name"`
+	TotalReceivedByteSize int64  `json:"total_received_byte_size"`
+	TotalSentByteSize     int64  `json:"total_sent_byte_size"`
+	TotalReceived         int64  `json:"total_received"`
+	TotalSent             int64  `json:"total_sent"`
+}
+
 type soraLicenseInfo struct {
 	ExpiredAt      string `json:"expired_at"`
 	MaxConnections int64  `json:"max_connections"`