The invention discloses surface treatment equipment for a cylindrical composite product. The surface treatment equipment comprises a curing box. A motor at the top of the curing box drives the composite product in the box to rotate through a synchronous belt. A second guide bar, a lead screw and a first guide bar are arranged between the composite product and a side plate of an opening of the curing box. The side plate of the curing box is provided with a stepping motor for driving the lead screw to rotate and an air cylinder for driving the extension end of the first guide bar to move vertically. A connection plate of a connector is provided with a second sleeve, a screw nut and a first sleeve. The side, away from the composite product, of the connection plate is provided with a longitudinal supporting rod. The supporting rod is provided with a glue collection box and a glue scraping piece. According to the surface treatment equipment, the glue scraping piece is attached to or separated from the composite product by lifting or resetting a piston rod of the air cylinder, and the glue scraping travel and the reset travel of the glue scraping piece are completed by moving a drive connector of the stepping motor leftwards and rightwards; and the glue scraping process is conducted under the working environment of the curing box, and the quality of the composite product is improved.