The invention discloses a diagnosis and treatment auxiliary device for the department of gynaecology. The diagnosis and treatment auxiliary device comprises a base, wherein a round groove is formed in the middle of the base, first sliding chutes are formed in the left side of the base, a round support base is arranged in the round groove, the round support base is connected with the base through a rotation shaft, a groove is formed in the left side of the round support base, second sliding chutes are formed in the upper part of the right side of the round support base, an arc-shaped conical rack is mounted on the periphery of the round support base, a controller is arranged on the upper part of the round support base, a pull plate is arranged in the groove, a collecting barrel is arranged on the upper side of the pull plate, first electric telescopic rods are arranged on two sides of the groove, the lower ends of the first electric telescopic rods are fixedly connected with the round support base, the upper ends of the first electric telescopic rods are fixedly connected with a seat board, and a half-round groove is formed in the middle of the left side of the seat board. With the diagnosis and treatment auxiliary device for the department of gynaecology, medical staff can carry out diagnosis and treatment on gynecological patients conveniently, and moreover, the gynecological patients feel comfortable during the diagnosis and treatment process.