PURPOSE: To provide the motor-driven wooden pestle machine which can reduce rotational frictional force by human power and can shorten the cooking time, and can cook well kneaded sesame and mashed fish, etc.

CONSTITUTION: This machine is provided with a wooden pestle 2, a motor-driven motor 3 for driving this wooden pestle, and a fitting part 4 for connecting the wooden pestle to the motor-driven motor, and the wooden pestle 2 is constituted so that its longitudinal direction coincides with the direction of an axis line C of a driving shaft of the motor-driven motor 3, and also, it is connected to the motor-driven motor 3 so as to be eccentric from the driving shaft C, and moreover, it can move forward and backward in its longitudinal direction and always turned in the advance direction.