Cake slicing knife

The utility model discloses a cake slicing knife compising a soleplate (4), a bearer (3) which is fixed on the soleplate (4), a knife holder (1) which is hinged to the bearer (3), and a handle (5) which is fixed on the knife holder (1). The back of the knife holder (1)is equipped with grooves (7), and blades (2) is fixed between the grooves (7) of the knife holder (1) by a fastening component (10). The fastening component (10) of the fixed knife holder(1) and the blades (2) is equipped with a thickness adjusting shim of cakes (9) to make certain space between the knife holder(1) and the blades (2). The cutting point of the blades (2) is above the bottom of the grooves (7). After adopting the above structure, the defects of time consuming, labor consuming, uneven thickness and easy finger cutting are better solved while cutting the cakes by a kitchen knife, while the thickness of the cakes can be adjusted by adopting the adjusting shim (9) with different thicknesses. The utility model has features of reasonable and simple structure, rapid piece cutting with labor saving, homogeneous thickness, safety, etc.