The invention discloses a block cutting device of dried bean curd. The block cutting device comprises a material storage mechanism, a conveying mechanism, a material guiding mechanism and a slicing mechanism, wherein bean products to be sliced are placed in a storage hopper, a first vibration motor is matched with a material shifting piece on a feeding conveying belt to lift and convey the bean products in the storage hopper to a transfer conveying belt, and the bean products enter a material collecting conveying plate from a material collecting hopper; the material guiding mechanism comprisesa guide frame, a guide conveying belt, a guide strip and a material distributing plate, and the bean products are conveyed to the corresponding feeding channel through the matching of the guide stripand the material distributing plate; the bean products which are fed into the feeding channel are sent back to the storage hopper; and the slicing mechanism comprises a slicing machine frame, cuttingblades, a cutting shaft and a feeding assembly. According to the block cutting device, the bean products can be automatically sliced, the labor intensity of workers is greatly reduced, and the working efficiency and the working quality are improved.