Drainage of drainage and sewerage pipelines can be roughly divided into the following methods: mechanical flushing, hydraulic flushing, manpower dredging, bamboo (glass fiber reinforced plastic bamboo) dredging, winch dredging, drill pipe dredging, etc. The general methods of dredging sewage drainage pipelines They are carried out by some professional dredging companies. The specific method is to set up a winch near the upstream and downstream of the sewage pipeline that needs to be dredged, and use the bamboo piece or the rope stringer to draw the steel rope on one winch to another. The position of the winch depends on the alternate action of the winch to make the pipe tool scrape up and down in the sewage pipe, so as to achieve the purpose of moving and removing sludge and cleaning the pipe. With the continuous advancement of science and technology, the methods for dredging sewage pipes are also increasing. In actual use, appropriate choices can be made according to needs.