The invention relates to the field of medical apparatus and instruments, in particular to an endoscope suture cutter. The endoscope suture cutter comprises an outer casing pipe and an inner core. The outer casing pipe covers the inner core. The outer casing pipe and the inner core can relatively move. The inner core is a strip body. The inner core is provided with a cutting end. The edge of one side of the cutting end is recessed inwards towards the edge of the other side to form a first blade. The cutting edge of the first blade faces the inner side of the outer casing pipe. A second blade is arranged in the position, corresponding to the tail end of the cutting end, of the outer casing pipe. The cutting edge of the second blade faces the outer side of the outer casing pipe. Compared with original scissor type suture scissors, the endoscope suture cutter is simpler in structure, the two blades of which the cutting edges are oppositely arranged are used for cutting sutures in a direct inlet direct outlet cutting mode, it is avoided that force is decomposed in the inclined stretching position in the scissor type cutting mode, the endoscope suture cutter is easier to control, cutting operation is easy to control, and counter cutting force at the axis is larger.