To provide a slicing aid capable of evenly slicing a cooking ingredient, so as not to generate a sliced piece of wedge form at the time of slicing the cooking ingredient in the kitchen.

Four through-holes 2 are formed at the center of" a body 1, and a stopper 4 is provided for inserting and fixing two projected parts of pillars 3 in and to the through-holes 2. In addition, a groove 6 forming the end of the stopper 4 is formed for allowing the lateral slide motion thereof. Also, a stopper set screw 7 as well as a lateral vibration preventing guide 8 is provided, and a scale 10 is formed.