Spring lock for swinery

Provided is a spring lock for a swinery. In order to guarantee the safety of the swinery in pig raising production and the convenience of getting in and out of pigs, various door locks are arranged on the door portion of the swinery, effects are all not ideal, and ideal degree can not be achieved. The spring lock for the swinery comprises a lock tongue (1), a baffle (2), a bottom plate (3), a top frame (4), a shaft (5) and a handle (6). The top frame is connected with the shaft, the shaft penetrates through the baffle, the right side of the baffle is connected with the handle, and the lock tongue is fixedly arranged on a swinery door. The baffle is connected with the bottom plate, a space (7) is formed after the baffle, the top frame and the bottom plate are connected, and the lock tongue is inserted into the space. The spring lock for the swinery is used for a door lock of the swinery in pig raising production.