The utility model discloses a bucket tooth for loader bucket, including prong portion and installation department, the upper surface of prong portion is formed by first plane and the 2nd plane intersection, be provided with heavy groove on the upper surface second plane of prong portion downwards, the lower surface of prong portion is formed by third plane and fourth plane intersection, prong portion ranging back is followed to the installation department, the installation department includes upper plate and hypoplastron, it is lighter than plate thickness down to go up the plate thickness, enclose between upper plate and hypoplastron and close opening mounting groove backward, the upper and lower both sides that correspond the mounting groove are last, be provided with two pairs of screw holes on the hypoplastron, on the upper plate, the strengthening rib of slope is provided with around the screw hole department of leaning on the lining, be provided with the bolt mounting groove on the hypoplastron. The utility model provides a bucket tooth, through get rid of redundancy design at the thick and heavy design of abrasion part, non - abrasion part, when guaranteeing the bucket tooth wearability, it is lower to make its remaining weight when using up the inefficacy account for new total weight ratio again, has promoted the overall price / performance ratio of bucket tooth.