Novel underground diaphragm wall connector for special-shaped connector and construction method

The embodiment of the invention provides a novel underground diaphragm wall connector for a special-shaped connector and a construction method, and relates to the field of underground diaphragm walls. The novel underground diaphragm wall connector for the special-shaped connector comprises a special-shaped connector assembly and a transfer connecting assembly. The two hoisting lug plates are inserted into the two sides of the hoisting hole correspondingly, the connecting pin sequentially penetrates through one hoisting lug plate and the hoisting hole, the connecting pin penetrates through the hoisting hole and then is connected to the other hoisting lug plate through threads, the hoisting piece is connected to the hoisting ring, the multiple transfer connecting assemblies are installed according to the steps, hoisting is conducted through hoisting equipment, and then the hoisting piece is connected to the hoisting ring. The hoisting piece and the special-shaped connector piece are in transfer connection throu