The invention relates to a medical instrument and provides a pincers and scissors device operated with three fingers. The pincers and scissors device operated with three fingers is operated and controlled with the thumb, the forefinger and the middle finger and has the clamping function and the shearing function. The pincers and scissors device operated with three fingers is characterized in that a scissors handle body (1) operated and controlled with the thumb is installed on the lower portion of a shaft (4), a scissors handle body (2) operated and controlled with the forefinger is installed in the middle of the shaft (4), and a pincers handle body (3) controlled with the middle finger is installed on the upper portion of the shaft (4). During suture surgery, an operator can clamp the head of a suture line, make the head of the suture line penetrate though a needle eye, cut the suture line to obtain a suture line section, insert a needle, pull out the needle, tie a knot, cut off the suture line and the like by operating the pincers and scissors device with the right hand, the trouble caused by the situation that the right hand of the operator conducts switching between a pair of pincers and a pair of scissors frequently during surgery is avoided, surgery time can be shortened, and the suture efficiency is improved.