diff --git a/game/builtin/aoi2d.go b/game/builtin/aoi2d.go
index 7482594..e7f66c7 100644
--- a/game/builtin/aoi2d.go
+++ b/game/builtin/aoi2d.go
@@ -133,9 +133,9 @@ func (slf *AOI2D) setAreaSize(width, height int) {
 	slf.areaHeight = float64(height)
 	slf.areaWidthLimit = int(math.Ceil(slf.width / slf.areaWidth))
 	slf.areaHeightLimit = int(math.Ceil(slf.height / slf.areaHeight))
-	areas := make([][]map[int64]game.AOIEntity2D, slf.areaWidthLimit)
+	areas := make([][]map[int64]game.AOIEntity2D, slf.areaWidthLimit+1)
 	for i := 0; i < len(areas); i++ {
-		entities := make([]map[int64]game.AOIEntity2D, slf.areaHeightLimit)
+		entities := make([]map[int64]game.AOIEntity2D, slf.areaHeightLimit+1)
 		for e := 0; e < len(entities); e++ {
 			entities[e] = map[int64]game.AOIEntity2D{}
 		}
@@ -161,7 +161,6 @@ func (slf *AOI2D) addEntity(entity game.AOIEntity2D) {
 	heightArea := int(y / slf.areaHeight)
 	guid := entity.GetGuid()
 	slf.areas[widthArea][heightArea][guid] = entity
-
 	focus := map[int64]game.AOIEntity2D{}
 	slf.focus[guid] = focus
 	slf.rangeVisionAreaEntities(entity, func(eg int64, e game.AOIEntity2D) {
@@ -207,14 +206,26 @@ func (slf *AOI2D) rangeVisionAreaEntities(entity game.AOIEntity2D, handle func(g
 	} else if sw > slf.areaWidthLimit {
 		sw = slf.areaWidthLimit
 	}
-	for w := sw; w <= widthArea+widthSpan; w++ {
+	ew := widthArea - widthSpan
+	if ew < sw {
+		ew = sw
+	} else if ew > slf.areaWidthLimit {
+		ew = slf.areaWidthLimit
+	}
+	for w := sw; w < ew; w++ {
 		sh := heightArea - heightSpan
 		if sh < 0 {
 			sh = 0
 		} else if sh > slf.areaHeightLimit {
 			sh = slf.areaHeightLimit
 		}
-		for h := sh; h <= heightArea+heightSpan; h++ {
+		eh := widthArea - widthSpan
+		if eh < sh {
+			eh = sh
+		} else if eh > slf.areaHeightLimit {
+			eh = slf.areaHeightLimit
+		}
+		for h := sh; h < eh; h++ {
 			var areaX, areaY float64
 			if w < widthArea {
 				tempW := w + 1
diff --git a/game/builtin/aoi2d_test.go b/game/builtin/aoi2d_test.go
new file mode 100644
index 0000000..5952ee9
--- /dev/null
+++ b/game/builtin/aoi2d_test.go
@@ -0,0 +1,51 @@
+package builtin
+
+import (
+	"fmt"
+	"github.com/kercylan98/minotaur/utils/random"
+	"testing"
+	"time"
+)
+
+type Ent struct {
+	guid         int64
+	x, y, vision float64
+}
+
+func (slf *Ent) SetGuid(guid int64) {
+	slf.guid = guid
+}
+
+func (slf *Ent) GetGuid() int64 {
+	return slf.guid
+}
+
+func (slf *Ent) GetPosition() (x, y float64) {
+	return slf.x, slf.y
+}
+
+func (slf *Ent) GetVision() float64 {
+	return slf.vision
+}
+
+func TestNewAOI2D(t *testing.T) {
+	aoi := NewAOI2D(10000, 10000, 100, 100)
+
+	start := time.Now()
+	for i := 0; i < 50000; i++ {
+		aoi.AddEntity(&Ent{
+			guid:   int64(i),
+			x:      float64(random.Int(0, 10000)),
+			y:      float64(random.Int(0, 10000)),
+			vision: 200,
+		})
+	}
+	fmt.Println("添加耗时：", time.Since(start))
+
+	//start = time.Now()
+	//aoi.SetAreaSize(1000, 1000)
+	//fmt.Println("重设区域大小耗时：", time.Since(start))
+	start = time.Now()
+	aoi.SetSize(10100, 10100)
+	fmt.Println("重设大小耗时：", time.Since(start))
+}