The invention provides a disposable scrotum support which comprises a scrotum support body, a containing groove is formed in the scrotum support body, and the scrotum support body comprises a penis supporting part and scrotum supporting parts located on the two sides of the penis supporting part. A fixing mechanism used for fixing the scrotum support body to the body of a patient is arranged on the outer side of the scrotum bearing part, the fixing mechanism comprises a fixing belt, a pushing frame, an unwinding roller, a winding roller and a transmission assembly, an adhesive layer is arranged on the side, facing the body, of the fixing belt, isolation paper is arranged on the adhesive layer, and the transmission assembly is arranged on the side, facing the body, of the fixing belt. The pushing frame is located on one side of the scrotum supporting part, the pushing frame can reversely move relative to the scrotum support body, the unwinding roller unwinds the fixing band, meanwhile, the winding roller winds the isolation paper, and the scrotum support body is bonded to the body of a patient through the adhesive layer of the fixing band to be fixed. The scrotum and the penis can be supported to fully expose the operation view of the examination part, and fixation is firm.