To efficiently crush a long chip and an entangled chip, by making a cutting chip hard to escape from a crushing blade.

A chip crusher 10 comprises a plurality of chip crushing blades 30 having a base part 31 fixedly installed at an interval on a rotational driving shaft 11 provided in a casing 20 opening an upper surface and at least one rotary blade 33 extending in the outer peripheral direction from the base part 31, a plurality of first stationary blades 41a and 41b for crushing the chip by cooperating with a blade part of a side surface of the rotary blade 33 in the chip crushing blades 30 by contacting with a side surface of the respective chip crushing blades 30 and a plurality of second stationary blades 43a and 43b for crushing the chip by cooperating with a blade part of the outer periphery of the rotary blade 33 in the respective chip crushing blades 30. The rotary blade 33 of the respective chip crushing blades 30 comprises scooping blades 34a and 34b having a scooping angle to the rotational circumferential direction and straight blades 36a and 36b extending in the outer peripheral direction from the scooping blades 34a and 34b.