To provide a jaw crusher capable of continuously manufacturing aggregate at a low cost while enhancing the yield and the quality of an aggregate product by preferentially crushing mortar portion of a waste concrete raw material, and effectively abrading corner parts of the aggregate obtained by crushing a raw material such as a rock.

The jaw crusher manufactures aggregate by compressing and crushing a raw material thrown in between crushing teeth 4 consisting of a moving tooth 4a and a fixed tooth 4b. The surface of the crushing tooth 4 is constituted by providing a plurality of uneven shapes consisting of recessed parts 6a and projecting parts 6b arrayed substantially in the horizontal direction; or the surface of the crushing tooth is constituted by alternately providing a plurality of hard members 4x and software members 4y which are arrayed substantially in the horizontal direction so as to form uneven shapes by the difference in abrasion by the compression and crushing.

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