diff --git a/bot/ingame.go b/bot/ingame.go
index 1f7acd2..bdf8ea6 100644
--- a/bot/ingame.go
+++ b/bot/ingame.go
@@ -442,14 +442,14 @@ func handleChunkDataPacket(c *Client, p pk.Packet) error {
 		FullChunk      pk.Boolean
 		PrimaryBitMask pk.VarInt
 		Heightmaps     struct{}
+		Biomes         = biomesData{fullChunk: (*bool)(&FullChunk)}
 		Data           chunkData
 		BlockEntities  blockEntities
 	)
-	// TODO: Biomes data in this packet
-	if err := p.Scan(&X, &Z, &FullChunk, &PrimaryBitMask, pk.NBT{V: &Heightmaps}, &Data, &BlockEntities); err != nil {
+	if err := p.Scan(&X, &Z, &FullChunk, &PrimaryBitMask, pk.NBT{V: &Heightmaps}, &Biomes, &Data, &BlockEntities); err != nil {
 		return err
 	}
-	chunk, err := world.DecodeChunkColumn(bool(FullChunk), int32(PrimaryBitMask), Data)
+	chunk, err := world.DecodeChunkColumn(int32(PrimaryBitMask), Data)
 	if err != nil {
 		return fmt.Errorf("decode chunk column fail: %v", err)
 	}
@@ -459,6 +459,24 @@ func handleChunkDataPacket(c *Client, p pk.Packet) error {
 	return err
 }
 
+type biomesData struct {
+	fullChunk *bool
+	data      [1024]int32
+}
+
+func (b *biomesData) Decode(r pk.DecodeReader) error {
+	if b.fullChunk == nil || *b.fullChunk {
+		return nil
+	}
+	for i := range b.data {
+		err := (*pk.Int)(&b.data[i]).Decode(r)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 type chunkData []byte
 type blockEntities []blockEntitie
 type blockEntitie struct {
diff --git a/bot/world/chunk.go b/bot/world/chunk.go
index 69216a3..572d94f 100644
--- a/bot/world/chunk.go
+++ b/bot/world/chunk.go
@@ -9,7 +9,7 @@ import (
 )
 
 //DecodeChunkColumn decode the chunk data structure
-func DecodeChunkColumn(isFull bool, mask int32, data []byte) (*Chunk, error) {
+func DecodeChunkColumn(mask int32, data []byte) (*Chunk, error) {
 	var c Chunk
 	r := bytes.NewReader(data)
 	for sectionY := 0; sectionY < 16; sectionY++ {
@@ -60,14 +60,7 @@ func DecodeChunkColumn(isFull bool, mask int32, data []byte) (*Chunk, error) {
 		//用数据填充区块
 		fillSection(&c.sections[sectionY], perBits(byte(BitsPerBlock)), DataArray, palette)
 	}
-	// if isFull { //need recive Biomes datas
-	// 	_, err := pk.ReadNBytes(data, 256*4)
-	// 	if err != nil {
-	// 		return nil, fmt.Errorf("read Biomes fail: %v", err)
-	// 	}
-	// }
 
-	// fmt.Println(c)
 	return &c, nil
 }