The invention relates to the technical field of medical instruments for spinal operations, in particular to a tong head of fog type tongs. The tong head comprises a tong head pipe and a bar pressing casing pipe, and the outer side of the tong head pipe is sleeved with the bar pressing casing pipe. The tong head is characterized in that two opposite strip-shaped openings are formed in the side wall of the tong head pipe in the axial direction, locating elastic sheets are arranged in the strip-shaped openings, locating protrusions are arranged on the inner sides of the lower ends of the two locating elastic sheets in the strip-shaped openings in the lower portion of the tong head pipe, and limiting protrusions are arranged in the lower portion of the tong head pipe. The tong head does not need to be aligned to small locating protrusions or a groove in a screw seat, connecting is convenient and saves labor, dismounting is quite easy, the motion of repeatedly aligning the tong head to a meshing tong handle in the nail seat connecting process is completely avoided, friction force in the bar pressing process is small, dismounting is easy and convenient, the fog type tongs on the screw seat can be dismounted without repeated swinging, time and labor are saved in the operation process, and operation time is shortened greatly.