Excavator bucket used for small-section tunnel earthwork

An excavator bucket used for small-section tunnel earthwork comprises a bucket body. The two sides of the bucket body are respectively provided with a clamping groove, and the inserting opening direction of each clamping groove is perpendicular to the opening face of the bucket body. A reinforcing steel plate with the front end provided with a sharp part is movably connected into the clamping groove in at least one side of the bucket body, the reinforcing steel plates are movably connected into the clamping grooves from the rear side of the bucket body, and the sharp parts are located outside the bucket body. The excavator bucket is simple in structure; partial structural modification is made to an existing bucket, the reinforcing steel plates can be inserted according to actual needs in use when a small-section tunnel needs to be excavated, and the reinforcing steel plates are removed when being not used. While the normal functions of the existing bucket are not affected, the excavator bucket is also suitabl