Blackspot-free operation incision device

The utility model relates to a scarless operation incision device, comprising a blade with a handle, a skin flatting board, a sucker together with a main knife holder and an auxiliary knife holder which are arranged at the sucker. A main knife holder base is fixedly connected with the sucker; the main knife holder is arranged at the main knife holder base by a sliding column and a baffler while handle fastening bolts and a handle chutes are arranged at the auxiliary knife holder which is arranged at one side of the sucker by a sliding rail and a baffler fixed at the sucker; an inner sliding block of the auxiliary knife holder is connected with the sliding rail at the sucker while an outer sliding block of the auxiliary knife holder is connected with the sliding rail at the main knife holder; an air deflation valve is arranged at the top surface of the sucker while a flatting baffler and a negative pressure suction connecting hole are arranged at the side of the sucker; the negative pressure suction is connected with the connecting hole; a base board arranged at the bottom of the sucker is connected with the sucker and the skin flatting board and a knife entrance groove and a knife sliding groove are arranged at the skin flatting board. The utility model has the advantages that the skin surface and shallow dermis can be cut into inclined rectangular pieces; the skin pieces cover at the wound in order to prevent scar from forming; the healing wound is flat, smooth and is no scar left. The wound can cause dysfunction in body is prevented.