The invention discloses a comprehensive processing device for wastewater and waste liquid. The comprehensive processing device at least comprises a wastewater pre-processing pool, a medium and low pressure reverse osmosis membrane processing tank, a waste liquid electrochemical pre-processing pool, a concentration regulating tank, an anaerobic haloduric biochemical pool, an aerobic haloduric biochemical pool and an electrochemical processing tank, wherein the wastewater outlet of the wastewater pre-processing pool is connected with the inlet of the medium and low pressure reverse osmosis membrane processing tank; the inlet of the waste liquid electrochemical pre-processing pool is connected with a municipal or industrial waste liquid pipeline and the wastewater outlet of the medium and low pressure reverse osmosis membrane processing tank; the wastewater outlet of the waste liquid electrochemical pre-processing pool is connected with the inlet of the concentration regulating tank; theinlet of the anaerobic haloduric biochemical pool is connected with the outlet of the concentration regulating tank; the outlet of the anaerobic haloduric biochemical pool is connected with the inletof the aerobic haloduric biochemical pool; and the outlet of the aerobic haloduric biochemical pool is connected with the inlet of the electrochemical processing tank. The comprehensive processing device for wastewater and waste liquid, which is provided by the invention, is characterized in that water sources, heat sources and energy are comprehensively utilized to process wastewater and waste liquid with low cost and high efficiency.