Underwater positioning guide frame for offshore wind power foundation pile sinking and pile sinking construction method

The invention discloses an underwater positioning guide frame for offshore wind power foundation pile sinking and a pile sinking construction method. The underwater positioning guide frame comprises a main body rigid frame, a suction anchor, a guide measuring cylinder and a central suspender, wherein the suction anchor, the guide measuring cylinder and the central suspender are installed at the bottom of the main body rigid frame. During construction, an underwater beacon, an underwater three-dimensional attitude instrument and other equipment are installed on the main body rigid frame to control the main body rigid frame to be lifted and placed in water, then the suction anchor is fixed on a seabed through a pump prying block, and then pile inserting and pile sinking of an engineering pile are controlled and monitored through a remote control unmanned submersible, a video real-time monitoring device and the like. The guide frame is high in structural strength and stable in work, the guide measuring cylinder