To provide a sheet material cutting device capable of obtaining cut products of excellent cut quality by leading out an edge formed of the edge of a sheet material, in a fixed direction without interfering or mixing with the cut products when cutting or after cutting the sheet material in a sheet material cutting device followed by edge cutting.

This sheet material cutting device cuts the sheet material by the cooperation of a rotationally driven first round cutting edge group and a second round cutting edge group journaled, with cutting edge tips disposed to come in pressure contact with cutting edge tips of round cutting edges of the first round cutting edge group. The sheet material cutting device is provided with a guide for leading out the edge formed of the edge of the sheet material, in the fixed direction, and a guide roller for supporting the edge formed of the edge of the sheet material. The sheet material cutting device may be provided with a guide for leading out edges formed between adjacent strips, in the fixed direction.