The invention discloses a large-depth all-electric driving operation type ROV platform, comprising a main frame structure, a power propulsion device fixed on the main frame structure, a pan head camera, a high-definition camera, a dimming LED, a functional robot arm I, a laser imaging device, an LED lamp, a functional robot arm II, a hydraulic power unit cabin, a drive unit pressure-resistant cabin, a main pressure-resistant cabin, a buoyancy mechanism, a conventional camera and a focusing camera; The main frame structure comprises a main frame load-bearing longitudinal pipe, a main frame hanging device, an equipment mounting plate, a base guard strip, a stiffening rib plate, a main frame square groove, a main frame center bracket and a main frame load-bearing horizontal pipe. The invention can be used for horizontal motion and rotational motion of an underwater vehicle, and the motion control of the underwater vehicle is realized.