The utility model discloses an aluminum cable steel reinforced wire crimping device used for a power lead construction. The aluminum cable steel reinforced wire crimping device includes a wire core clamping block, a left clamping sleeve and a right clamping sleeve hinged to an end of the left clamping sleeve. The wire core clamping block includes a left clamping block and a right clamping block. Slots arranged in the left clamping block and the right clamping block and slots arranged in the left clamping sleeve and the right clamping sleeve are matched to each other. The slots are inside provided with fastening bolts. After the left clamping block and the right clamping block are combined with each other, the diameter size of an inner arc is matched to that of a wire core. The left clamping sleeve and the right clamping sleeve are both provided with operation rods connected with each other through a latching mechanism arranged on the operation rod. The aluminum cable steel reinforced wire crimping device is time-saving and labor-saving in use. When dealing with aluminum cable steel reinforced wires having diameters over 20mm and having comparatively greater tension after being dispersed, a user only needs to press the operation rod to lock the operation rod in an appropriate position and moves the device towards the dispersed end of the leads. The aluminum cable steel reinforced wire crimping device is time-saving, labor-saving, convenient and quick in operation and is high in operation efficiency.