diff --git a/scheduler/core/evaluator/basic/basic_evaluator.go b/scheduler/core/evaluator/basic/basic_evaluator.go
index f48fae00e..9e9462e53 100644
--- a/scheduler/core/evaluator/basic/basic_evaluator.go
+++ b/scheduler/core/evaluator/basic/basic_evaluator.go
@@ -96,7 +96,7 @@ func (eval *baseEvaluator) Evaluate(parent *supervisor.Peer, child *supervisor.P
 
 	load := getHostLoad(parent.Host)
 
-	dist := getDistance(parent, child)
+	dist := getAffinity(parent, child)
 
 	return profits * load * dist
 }
@@ -128,8 +128,8 @@ func getHostLoad(host *supervisor.Host) float64 {
 	return 1.0 - host.GetUploadLoadPercent()
 }
 
-// getDistance 0.0~1.0 larger and better
-func getDistance(dst *supervisor.Peer, src *supervisor.Peer) float64 {
+// getAffinity 0.0~1.0 larger and better
+func getAffinity(dst *supervisor.Peer, src *supervisor.Peer) float64 {
 	hostDist := 40.0
 	if dst.Host == src.Host {
 		hostDist = 0.0
diff --git a/scheduler/supervisor/peer.go b/scheduler/supervisor/peer.go
index 45dd6dec5..b9638177d 100644
--- a/scheduler/supervisor/peer.go
+++ b/scheduler/supervisor/peer.go
@@ -404,8 +404,12 @@ func (peer *Peer) SortedValue() int {
 	defer peer.lock.RUnlock()
 
 	pieceCount := peer.TotalPieceCount.Load()
-	hostLoad := peer.getFreeLoad()
-	return int(pieceCount*HostMaxLoad + hostLoad)
+	freeLoad := peer.getFreeLoad()
+	if peer.Host.IsCDN {
+		// if peer's host is CDN, peer has the lowest priority among all peers with the same number of pieces
+		return int(pieceCount * HostMaxLoad)
+	}
+	return int(pieceCount*HostMaxLoad + freeLoad)
 }
 
 func (peer *Peer) getFreeLoad() int32 {