The invention relates to a gastrolith lithotriptor. The gastrolith lithotriptor comprises a sleeve, memory steel wires, a guide core and a nylon rope, wherein one end of the guide core is provided with a push-pull handle, and the other end of the guide core passes through the sleeve and is provided with a main lithotripsy body; the main lithotripsy body comprises a plurality of memory steel wires, and one end of each memory steel wire is uniformly fixed at the end of the guide core; the other end of each memory steel wire is provided with an end ball, and a through hole is formed in each end ball; one end of the nylon rope passes through the through holes of the end balls sequentially, and connects free ends of the memory steel wires together in series. The gastrolith lithotriptor has the advantages of being simple in structure, free of laser and other complex equipment, convenient to use and capable of breaking large gastrolith, also conveniently catching the gastrolith and pulling the gastrolith outwards, thereby saving time and labor; therefore, the treatment cost is low.