Underwater rock cutting integrated platform

The invention provides an underwater rock cutting integrated platform which comprises an overwater platform and an underwater crushing mechanism, the overwater platform is provided with a plurality of positioning piles, the positioning piles extend downwards from the overwater platform to the underwater and are used for positioning the overwater platform, each positioning pile is connected with a lifting assembly, the lifting assembly can control the lifting/descending of the positioning pile, and the underwater crushing mechanism is used for crushing the underwater rock cutting integrated platform. A rolling saw trolley rail is arranged on the water platform in the length direction of the platform, a rolling saw trolley supporting arm is arranged on the rolling saw trolley rail, the rolling saw trolley supporting arm is movably connected with the rolling saw trolley rail, and the rolling saw trolley supporting arm can reciprocate on the rolling saw trolley rail. One end of the rolling saw trolley support arm