The present invention relates to a blender. The blender includes: a body provided with a motor assembly; a container which is detachably mounted to the body and in which food is accommodated; a container seating portion which is provided on a top surface of the body and on which the container is seated; a body accommodation portion which is recessed in a bottom surface of the container so that the container seating portion is inserted, and is in close contact with the container seating portion when the container is seated to fix the container; and an air vent which passes through a lower end of the container and communicates with the body accommodation portion, and through which air enters and exits the body accommodation portion when the container is mounted on the body.