The utility model relates to a rotary curet for induced abortion, which overcomes the defects that the existing negative-pressure induced abortion operation has operation pain, uterus perforation, abdominal viscera injury and missing suction. The rotary curet comprises a tube body extending into a uterus, wherein a handle is arranged at the tail end of the tube body; a push-open rotary curet body which is made of a nickel-titanium shape memory alloy is arranged at the front end of the tube body; the rotary curet body is defined by a plurality of axial curet blades; the front ends of the curet blades are connected into a whole; the rear ends of the curet blades are connected to the front end of the tube body; curet edges are arranged on the edges of the curet blades; and the curet blades are tubular after folded, and are in inverted pear shapes matched with a uterine cavity after pushed open. The nickel-titanium shape memory alloy keeps tubular at a room temperature, and the curet blades are pushed open to be in the inverted pear shapes by utilizing the temperature of viscera of a human body after the nickel-titanium shape memory alloy enters the human body; when the rotary curet body is rotated, the curet incises an inner wall of the uterine cavity; and the rotary curet is fewer in pain, and cannot cause complications such as the uterus perforation and the viscera injury.