Flushing device used before pig slaughtering and using method thereof

The invention relates to the technical field of pig slaughtering, in particular to a flushing device used before pig slaughtering and a using method thereof.The flushing device comprises a support, a flusher used for conducting assembly line flushing is arranged at the fixed top of the support, and slope-shaped ladder plates are arranged on the front side and the rear side of the support. According to the flushing device before pig slaughtering and the using method thereof, pigs are driven into the flushing device along the inlet of the pipeline, the pigs entering the flushing device can only advance along the pipeline, and the pigs are flushed cleanly by annularly-sprayed water flow in the process, so that flushing of the pigs in the advancing process is achieved, and the pigs are restrained by the pipeline; the pig washing device has the advantages that follow-up pigs can be washed in an assembly line mode, the pig washing device has better working efficiency compared with one-pig washing, passive restraint