Disclosed is an independent double-negative-pressure shale shaker, and belongs to the technical field of petroleum drilling solid control. The independent double-negative-pressure shale shaker comprises a base, a fluid discharge device, an inclination angle adjustment mechanism, a screening device, an exciting motor and a double-negative-pressure system, wherein the double-negative-pressure system comprises a first negative-pressure system and a second negative-pressure system which are relatively independent; the first negative-pressure system dries drilling fluid of a first screen mesh set close to a material outlet, and the second negative-pressure system increases the treatment capacity of drilling fluid of a second screen mesh set close to the first screen mesh set; and meanwhile, in the deep well section, the second negative-pressure system can be switched to a fluid mist suction state, fluid mist on the screen surface is reduced, the safety is improved, and the pollution of fluid mist is reduced.