diff --git a/components/Bullets/Cogwheel.tscn b/components/Bullets/Cogwheel.tscn
new file mode 100644
index 0000000..2a68f02
--- /dev/null
+++ b/components/Bullets/Cogwheel.tscn
@@ -0,0 +1,84 @@
+[gd_scene load_steps=11 format=3 uid="uid://cdv7drkq43mfe"]
+
+[ext_resource type="PackedScene" uid="uid://crtdkysmnkith" path="res://components/Abstracts/BulletBase.tscn" id="1_mt0uq"]
+[ext_resource type="Script" uid="uid://cfe4nv832olhp" path="res://scripts/Contents/Bullets/Cogwheel.gd" id="2_cjmf3"]
+[ext_resource type="Texture2D" uid="uid://d0d1t8ch1lolp" path="res://resources/bullets/cogwheel/cogwheel.png" id="2_jis23"]
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_cjmf3"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": ExtResource("2_jis23")
+}],
+"loop": true,
+"name": &"default",
+"speed": 5.0
+}]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_cjmf3"]
+radius = 47.0
+
+[sub_resource type="Curve" id="Curve_cjmf3"]
+_data = [Vector2(0, 0.6), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_d8ajx"]
+curve = SubResource("Curve_cjmf3")
+
+[sub_resource type="Curve" id="Curve_gidgr"]
+_data = [Vector2(0, 1), 0.0, -0.35000002, 0, 1, Vector2(1, 0.65), -0.35000002, 0.0, 1, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_qlov4"]
+curve = SubResource("Curve_gidgr")
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_d26hc"]
+particle_flag_disable_z = true
+direction = Vector3(-1, 0, 0)
+spread = 0.0
+initial_velocity_min = 700.0
+initial_velocity_max = 700.0
+gravity = Vector3(0, 0, 0)
+scale_min = 0.9
+scale_max = 0.9
+scale_curve = SubResource("CurveTexture_qlov4")
+alpha_curve = SubResource("CurveTexture_d8ajx")
+
+[node name="Cogwheel" instance=ExtResource("1_mt0uq")]
+script = ExtResource("2_cjmf3")
+displayName = "齿轮"
+speed = 20.0
+baseDamage = null
+damageMultipliers = null
+usingDamageMultiplier = null
+penerate = 1.0
+penerateDamageReduction = null
+lifeDistance = null
+lifeTime = 5000.0
+allowFriendlyDamage = null
+canDamageSelf = null
+autoSpawnAnimation = null
+autoLoopAnimation = null
+autoDestroyAnimation = null
+autoDestroyOnHitMap = null
+freeAfterSpawn = null
+knockback = null
+recoil = null
+canDoDuplicate = null
+
+[node name="texture" parent="." index="0"]
+scale = Vector2(0.2, 0.2)
+sprite_frames = SubResource("SpriteFrames_cjmf3")
+
+[node name="hitbox" parent="." index="1"]
+visible = false
+shape = SubResource("CircleShape2D_cjmf3")
+
+[node name="trails" type="GPUParticles2D" parent="." index="2"]
+z_index = -1
+scale = Vector2(0.2, 0.2)
+amount = 5
+texture = ExtResource("2_jis23")
+preprocess = 1.0
+local_coords = true
+process_material = SubResource("ParticleProcessMaterial_d26hc")
diff --git a/components/Characters/Rooster.tscn b/components/Characters/Rooster.tscn
index 5d37d19..f6ff70e 100644
--- a/components/Characters/Rooster.tscn
+++ b/components/Characters/Rooster.tscn
@@ -1,7 +1,9 @@
-[gd_scene load_steps=19 format=3 uid="uid://dky8574uqc18r"]
+[gd_scene load_steps=21 format=3 uid="uid://dky8574uqc18r"]
 
 [ext_resource type="PackedScene" uid="uid://cvogxi7mktumf" path="res://components/Abstracts/EntityBase.tscn" id="1_e5pl8"]
 [ext_resource type="Script" uid="uid://cthtupc6dtbav" path="res://scripts/Contents/Characters/Rooster.gd" id="2_oqdqd"]
+[ext_resource type="PackedScene" uid="uid://dqywctcj4y2xi" path="res://components/Weapons/Cogwheel.tscn" id="3_da2ca"]
+[ext_resource type="PackedScene" uid="uid://c0n3igy4hucrg" path="res://components/Weapons/PurpleCrystal.tscn" id="4_0omr3"]
 [ext_resource type="AudioStream" uid="uid://cdrevrq7n6yqa" path="res://resources/sounds/effect/Boing.mp3" id="4_66s6c"]
 [ext_resource type="AudioStream" uid="uid://benyec5bqni0b" path="res://resources/sounds/effect/Chomp.wav" id="4_k0yme"]
 [ext_resource type="AudioStream" uid="uid://dmxh3bpk8vyy5" path="res://resources/sounds/effect/Coin.mp3" id="5_xnbhq"]
@@ -110,6 +112,10 @@ process_material = SubResource("ParticleProcessMaterial_joj4g")
 [node name="weaponStore" parent="." index="2"]
 process_mode = 4
 
+[node name="Cogwheel" parent="weaponStore" index="0" instance=ExtResource("3_da2ca")]
+
+[node name="PurpleCrystal" parent="weaponStore" index="1" instance=ExtResource("4_0omr3")]
+
 [node name="sprint" parent="sounds" index="0"]
 stream = ExtResource("4_66s6c")
 
diff --git a/components/Weapons/Cogwheel.tscn b/components/Weapons/Cogwheel.tscn
new file mode 100644
index 0000000..1e47e7d
--- /dev/null
+++ b/components/Weapons/Cogwheel.tscn
@@ -0,0 +1,38 @@
+[gd_scene load_steps=4 format=3 uid="uid://dqywctcj4y2xi"]
+
+[ext_resource type="PackedScene" uid="uid://ckq2cq6m23hq3" path="res://components/Abstracts/WeaponCardBase.tscn" id="1_ga2jk"]
+[ext_resource type="Script" uid="uid://nm2xleunwf4r" path="res://scripts/Contents/Weapons/Cogwheel.gd" id="2_c1bcd"]
+[ext_resource type="Texture2D" uid="uid://d0d1t8ch1lolp" path="res://resources/bullets/cogwheel/cogwheel.png" id="2_qs30c"]
+
+[node name="Cogwheel" instance=ExtResource("1_ga2jk")]
+script = ExtResource("2_c1bcd")
+avatarTexture = ExtResource("2_qs30c")
+displayName = "齿轮回旋镖"
+quality = 3
+store = {
+"atk": 5,
+"rotate": 15.0
+}
+storeType = {
+"atk": 1,
+"rotate": 3
+}
+descriptionTemplate = "发射[b]齿轮[/b]，在飞行一定距离后回旋。
+齿轮的伤害频率与转速成正比。
+锋利度：$atk，初始转速：$rotate，
+齿轮的转速随时间逐渐降低。"
+cooldown = 1000.0
+debugRebuild = true
+
+[node name="avatar" parent="container/info" index="0"]
+texture = ExtResource("2_qs30c")
+
+[node name="name" parent="container/info" index="2"]
+displayName = "齿轮回旋镖"
+quality = 3
+
+[node name="description" parent="container" index="2"]
+text = "[center]发射[b]齿轮[/b]，在飞行一定距离后回旋。
+齿轮的伤害频率与转速成正比。
+锋利度：[color=cyan]5[/color]，初始转速：[color=cyan]15.0°[/color]，
+齿轮的转速随时间逐渐降低。[/center]"
diff --git a/resources/bullets/cogwheel/cogwheel.png b/resources/bullets/cogwheel/cogwheel.png
new file mode 100644
index 0000000..b91bbfd
Binary files /dev/null and b/resources/bullets/cogwheel/cogwheel.png differ
diff --git a/resources/bullets/cogwheel/cogwheel.png.import b/resources/bullets/cogwheel/cogwheel.png.import
new file mode 100644
index 0000000..e870217
--- /dev/null
+++ b/resources/bullets/cogwheel/cogwheel.png.import
@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://d0d1t8ch1lolp"
+path="res://.godot/imported/cogwheel.png-0cef3468595cc625d2a11b670aa34414.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://resources/bullets/cogwheel/cogwheel.png"
+dest_files=["res://.godot/imported/cogwheel.png-0cef3468595cc625d2a11b670aa34414.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
diff --git a/scripts/Contents/Bullets/Cogwheel.gd b/scripts/Contents/Bullets/Cogwheel.gd
new file mode 100644
index 0000000..2a8a7cd
--- /dev/null
+++ b/scripts/Contents/Bullets/Cogwheel.gd
@@ -0,0 +1,32 @@
+extends BulletBase
+class_name CogwheelBullet
+
+var initialRotate: float = 0
+var rotateSpeed: float = 0
+var dotTime: float = 0
+var slow: float = 0.2
+
+func ai():
+	PresetBulletAI.forward(self, rotation)
+	texture.rotation_degrees += rotateSpeed
+	if rotateSpeed < 0:
+		speed += slow
+		PresetBulletAI.trace(self, launcher.position, 0.1)
+		if position.distance_to(launcher.position) < 100:
+			tryDestroy()
+	else:
+		speed = initialSpeed * (rotateSpeed / initialRotate)
+	dotTime = 1000 / (rotateSpeed)
+	rotateSpeed -= slow
+func applyDot():
+	hitbox.disabled = true
+	await TickTool.frame()
+	hitbox.disabled = false
+	await TickTool.millseconds(dotTime / launcher.fields[FieldStore.Entity.ATTACK_SPEED])
+	await TickTool.frame() # 等至少一帧，防止跳帧导致没检测到伤害
+	return true
+
+func refract(newBullet: BulletBase, _entity: EntityBase, _index: int, _total: int, _lastBullet: float):
+	if newBullet is CogwheelBullet:
+		newBullet.rotateSpeed = initialRotate
+	return newBullet
diff --git a/scripts/Contents/Bullets/Cogwheel.gd.uid b/scripts/Contents/Bullets/Cogwheel.gd.uid
new file mode 100644
index 0000000..d4b61bc
--- /dev/null
+++ b/scripts/Contents/Bullets/Cogwheel.gd.uid
@@ -0,0 +1 @@
+uid://cfe4nv832olhp
diff --git a/scripts/Contents/Weapons/Cogwheel.gd b/scripts/Contents/Weapons/Cogwheel.gd
new file mode 100644
index 0000000..cb53bac
--- /dev/null
+++ b/scripts/Contents/Weapons/Cogwheel.gd
@@ -0,0 +1,20 @@
+@tool
+extends Weapon
+
+func update(to: int, origin: Dictionary, _entity: EntityBase):
+    origin["atk"] += 2 * to * soulLevel
+    origin["rotate"] += 1 * to * soulLevel
+    return origin
+func attack(entity: EntityBase):
+    var weaponPos = entity.findWeaponAnchor("normal")
+    for bullet in BulletBase.generate(
+        ComponentManager.getBullet("Cogwheel"),
+        entity,
+        weaponPos,
+        weaponPos.angle_to_point(get_global_mouse_position()),
+    ):
+        if bullet is CogwheelBullet:
+            bullet.initialRotate = readStore("rotate")
+            bullet.rotateSpeed = readStore("rotate")
+            bullet.baseDamage = readStore("atk")
+    return true
diff --git a/scripts/Contents/Weapons/Cogwheel.gd.uid b/scripts/Contents/Weapons/Cogwheel.gd.uid
new file mode 100644
index 0000000..acf2b94
--- /dev/null
+++ b/scripts/Contents/Weapons/Cogwheel.gd.uid
@@ -0,0 +1 @@
+uid://nm2xleunwf4r