The present invention relates to a blender which comprises: a jar in which a blade module in which food is crushed is placed; a body in which the jar is seated and which has an opened lower surface; a motor assembly which is provided inside the body and rotates the blade module; a cooling fan which is provided at the lower end of a rotary shaft of the motor assembly and rotates when the motor assembly is driven to thereby force air flow in the inside of the body; a PCB module which is placed between the circumferential surface of the body and the motor assembly; a base plate which blocks the opened lower surface of the body and includes a plate suction port via which air is sucked into the inside of the body, and a plate drain port via which air is discharged to the outside of the body; and an air guide which connects the motor assembly to the plate drain port to thereby form a discharge path of air, wherein the PCB module is placed at the upper side of the plate suction port and is cooled by the sucked air.