Abstract: Taking the quick water braid as the research object,for the water braid connection difficult problems by the backflow of water in elevation drill,we analyzed the causes of the problem through carrying out the partial optimization for drill water braid shape structure,and designed a kind of quick connect water braid matching with drilling rig, the drilling efficiency can be effectively improved, and the structure is simple, easy to manufacture, convenient to be installed and disassembled, and the maintenance is convenient.