Ratchet opening spanner

The utility model provides an open-end retched wrench of hardware tool including a wrench body with the prior art. Two ends of the wrench body have polygonal cuts to cooperate with bolts or screws of differenct types. The utility model is characterized in that the wrench body at one end of the polygonal cuts has a semi-open type groove communicating with the polygonal cuts. Within the semi-open type groove is located an active piece, one end of said active piece is located at one side of the polygonal cuts, the back end of said active piece is connected with the front end of a spring, the back end of the spring is against the wrench body. On the edge of semi-open type groove is located a gland. Compared with the prior art, said open-end retched wrench can rotate freely on top of bolts or screws, ensuring uninterrupted operation and improving work efficiency.