金門菜刀是金門縣的特產之一，使用八二三炮戰期間中國人民解放軍砲擊金門的砲彈彈片、彈頭所製造，因菜刀鋒利耐用而著名，又稱砲彈鋼刀。
1958年至1979年之間，解放軍使用榴彈和砲宣彈砲擊金門；20年間有超過100萬枚砲彈落在金門。砲擊前期使用會爆炸的榴彈；後期則使用不會爆炸的砲宣彈，這兩種炸彈是金門菜刀的主要材料。另外，一顆砲彈可以製成40～60把菜刀，因此這些砲彈至今尚未用完。
砲戰後，金合利鋼刀店老闆吳君乃大量搜購整座島內的廢棄彈殼，將其用於鍛造刀具。由於彈頭的鋼鐵品質極佳，以之打造出來的菜刀也特別鋒利、耐用，鋼中帶韌的特性，即使切割硬物也不易變形，使金門菜刀在台灣遠近馳名。為防贗品混充，刀廠首創了開放現場指定砲彈製刀。由於菜刀有紀念價值，早年到金門當兵的中華民國國軍返回台灣時，常會帶上幾把作爲紀念；在小三通後，金門菜刀亦成了中國大陸觀光客爭相搶購的紀念品。
座標 / Coordinates
N24 59.160 E121 34.260
The Kinmen knife (Chinese: 金門菜刀; pinyin: Jīnmén Càidāo) is a knife exclusively made in Kinmen County in Fujian Province, Republic of China. The knives were once made from the remains of artillery shells fired by the U.S. and Allied forces in World War II, when the island was occupied by the Empire of Japan, and by mainland China between 1958 and 1978.
During the Second Taiwan Strait Crisis, the People's Liberation Army (PLA) of the People's Republic of China fired around 450,000 shells at the Kinmen islands in its conflict against the Republic of China which controls the islands. The shells have become a resource of steel for the local economy. Since the Second Taiwan Strait Crisis, Kinmen has become famous for its production of cleavers made from PRC artillery shells. Many of the shells in the later stages of the war were propaganda shells, with the high-explosive removed and replaced with stuffed leaflets, thus impacting on the island intact, rather than exploding into many tiny fragments. A blacksmith in Kinmen generally produces 60 cleavers from one artillery shell and tourists often purchase Kinmen knives as souvenirs together with other local specialties.
REF: Wikipedia, 交通部觀光局網站