The invention discloses a lock automatic processing device comprising a base provided with a second installing groove. A first installing plate is arranged on the second installing groove. First spring rods are arranged on one side of the first installing plate symmetrically. The other ends of the first spring rods are fixedly connected to the side wall of the second installing groove. The lock automatic processing device is simple in structure and easy to operate. Manual carrying is replaced by machinery, product quality is ensured while precision is improved, the first time of shock absorption is completed through the first spring rods, the second time of shock absorption is conducted through a second installing block and a second spring rod, the third time of shock absorption is achieved through shock absorption oil, a gasbag thereof and buoyancy of water, thus equipment parts are protected, service life is prolonged, then a first clamping device can fast clamp a workpiece through interaction of a rotary rod, a threaded rod, a fourth installing plate and other structures, disassembly and installation are convenient, and work efficiency is improved.