The invention belongs to the field of dried bean curd processing and particularly discloses a dried bean curd surface cutting machine used for cutting off the two opposite surfaces of each dried beancurd. The dried bean curd surface cutting machine comprises a base, a vertical frame, supporting rods, a conveying unit, a cutting unit and a collecting unit, the vertical frame and the supporting rods are fixed to the base, the conveying unit comprises a conveying belt and a first intermittent conveying mechanism for driving the conveying belt to move, the conveying belt and the first intermittent conveying mechanism are both mounted on the supporting rods, the cutting unit comprises a cam, a transmission part, two cutting knives, a first elastic reset part, guiding modules and two second elastic reset parts, the two cutting knives are both mounted on the transmission part, each guiding module is mounted on the outer side of the corresponding cutting knife, and a horn-shaped clamping opening is defined between the two guiding modules. After the dried bean curd surface cutting machine is adopted, through the horn-shaped clamping opening, the cutting thickness of dried bean curds can beaccurately controlled when the surfaces of the dried bean curds are cut by the cutting machine, and the dried bean curds are collected more advantageously after cutting.