The invention discloses a nipple correction device. The device comprises a housing, the inside of the housing is provided with a hollow cavity, a suction cup penetrates through a side wall of one endof the housing, one end of the suction cup extends into the hollow cavity, the outer side wall of the suction cup is fixedly connected to the side wall of the housing, the side wall of one end, away from the suction cup, of the housing is fixedly connected with a sleeve, the sleeve is internally provided with a sliding cavity, the side wall of one end, away from the suction cup, of the housing penetrates through the side wall of the sleeve and extends into the sliding cavity, a hollow cavity is slidably connected with a piston block, the end, away from the suction cup, of the piston block is fixedly connected with a sliding rod, the end, away from the piston block, of the sliding rod penetrates through the side wall of the housing and is slidably connected to the side wall, and the inner side wall of the sliding cavity is fixedly connected with a hollow rod. The device is reasonable in structure design, and can correct puerpera nipple depression, thereby not only ensuring the health ofpuerpera, but also ensuring the normal eating of a baby.