The invention relates to an excavator component, and particularly discloses an excavator bucket for engineering construction. The excavator bucket for engineering construction comprises a frame-shapedbucket body, a rope box is fixedly arranged in the bucket body, a rope wheel and a traction rope are arranged in the rope box, a bottom cover is rotatably and fixedly arranged at the rear end of thebucket body, a traction part is arranged at the upper end of the bottom cover, the traction part is connected with the traction rope, the bottom cover rotates forwards, the bucket capacity is reduced,otherwise, the bucket capacity is increased, a wheel shaft of the rope wheel is connected with a worm wheel, a worm which meshes with the worm wheel and a motor device which drives the worm to rotateare arranged in an inner cavity of a back plate, and bucket capacity adjustment can be achieved when the motor device drives the worm to rotate. The excavator bucket has the bucket capacity adjustingfunction, adjusting can be carried out according to actual working conditions, the operation efficiency can be improved to the maximum extent on the premise that stable work of a excavator is guaranteed; the adjusting operation of the bucket capacity is convenient and fast, time-saving and labor-saving; and a spare bucket is not required to be arranged, so that the equipment acquisition cost is reduced, and the defects of labor consumption, operation efficiency reduction and the like of the spare bucket in transportation, disassembly and assembly are overcome.