The invention provides a plastic pipe stirring machine. Overturning cylinders are fixedly installed on first supports. The lower ends of connectors are hinged to piston rods of the overturning cylinders. Supporting joints are fixedly installed on the upper sides of second supports. Connecting plates are inclined. A supporting groove is located on the upper sides of the connecting plates. At least two groups of conveying mechanisms are arranged between the second supports and a plastic pipe material frame. Each chain is provided with at least two stirring forks. The intervals between every two adjacent stirring forks are identical. A support rod is arranged on one side of each chain, and the inclined angle of the support rods is equal to that of the chain. Through the plastic pipe stirring machine, a plastic pipe is transferred from a plastic forming machine to the plastic pipe material frame, the plastic forming machine can conduct continuous production, and industrialized line production is formed.