The invention discloses a rectal prolapse trigger point injection anoscope, and belongs to the technical field of biomedical science. The rectal prolapse trigger point injection anoscope comprises a base and an anoscope body. The base and the anoscope body are connected with each other, a window is arranged on the base, the anoscope body is in the shape of a cylinder, the radius and the length of the cylinder gradually change, and the radius of the end, which is close to the base, of the cylinder of the anoscope body is larger than the radius of the end, which is far away from the base, of the cylinder of the anoscope body; one or a plurality of injection windows are arranged on the side walls of the anoscope body; the length of the anoscope body is 15 cm. The lengths of the elliptical injection windows range from 1.5 cm to 10 cm. The rectal prolapse trigger point injection anoscope has the advantages that the length of the anoscope body is increased and is 15 cm, accordingly, 'trigger point' injection treatment can be effectively carried out, and obvious clinical curative effects can be realized during rectal prolapse treatment; the rectal prolapse trigger point injection anoscope is simple in structure and easy to manufacture, operate and use.