The invention belongs to the technical field of medical devices, and particularly discloses a hypospadias post-operation protection device. The hypospadias post-operation protection device comprises an arch support, the arch support comprises a supporting transverse rod and arch frames, also comprises an air cushion connected with the supporting transverse rod, and also comprises a hip fixing device, wherein the hip fixing device comprises fixing rings and a hip restraint strap, the fixing rings are symmetrically arranged on the two sides of the air cushion, and the two ends of the hip restraint strap are connected with the fixing rings; a hip fixing ring strap is arranged in the middle of the hip restraint strap, and a fixing hole is formed in the hip fixing ring strap; leg root fixing straps are also symmetrically arranged on the hip fixing ring strap. The hypospadias post-operation protection device is simple in structure and convenient to use, friction between operative sites and foreign bodies can be effectively prevented, falling off of an operative-site drainage tube and pressure sore phenomenon occurrence of patients can also be effectively avoided, post-operation recovery effect of the patients can be effectively improved accordingly, and pains of the patients are reduced.