The invention discloses a sterilization device. The sterilization device comprises a shell, sliding rods are fixedly connected with the two sides of the top of the inner wall of the shell, and two sliding sleeves sleeve the surfaces of the sliding rods; a supporting plate is fixedly connected with the sides, opposite to each other, of the sliding sleeves, fixing rods are fixedly connected with thetwo sides of the bottom of the supporting plate, and a transmission frame is fixedly connected with the bottoms of the fixing rods. According to the sterilization device, through cooperative use of the shell, supporting rods, a first motor, a sterilized cotton ball, through holes, the sliding sleeves, a rotary disc, a movable rod, the transmission frame, the fixing rods, the supporting plate, thesliding rods and a second motor, the problems are solved that during existing maternal vulva sterilization, tweezers clamp the sterilized cotton ball to conduct sterilization. The gynaecology maternal vulva sterilization device has the advantage of being convenient to use by users, reduces the workload of the users, improves the working efficiency of the users and brings great convenience to theusers, and the practicability of the gynaecology maternal vulva sterilization device is improved.