The invention discloses a plastic pipe, in particular to an impact-resistant plastic pipe. The impact-resistant plastic pipe can resist high impact strength, and comprises an inner pipe and an outer pipe, wherein the outer pipe is sheathed on the inner pipe and connected with the inner pipe into a whole body; the inner pipe is in a circular shape; and the inner wall of the outer pipe is continuously provided with depressions. A hollow position is formed between the continuously arranged depressions and the outer wall of the inner pipe, and the outer pipe in the hollow position forms an archedstructure, thus, while withstanding an impact force, the arched structure can deform to absorb the impact force and prevent the inner pipe form being impacted. In addition, the inner diameter of the circular inner pipe is constant, and the fluid can be transported more stably. The inner pipe and the outer pipe can be pressed into a whole body, thus the plastic pipe is easy to be machined.