The invention relates to a middle/low-temperature geothermic efficient thermoelectric coupling combined supply system based on an organic Rankine cycle (ORC), which has the main technical structure as follows: an ORC system, an absorption refrigeration system, a direct heat utilization system and an indirect heat utilization system are connected in series through a geothermic water supply pipeline. Specifically, after geothermic water supply is orderly connected to a first evaporator, a generator, a plate type heat exchanger and a third evaporator, the geothermic water supply is connected to inlets of a first condenser and a second evaporator in parallel, and the water discharged from the first condenser is introduced to a geothermic recharge well. Water discharged from a low-temperature side of the plate type heat exchanger is divided into two paths, one path is connected to a hot water storage box; and the other path is connected to a tail end device of the direct heat utilization system and then returns to a low-temperature water inlet of the plate type heat exchanger by means of a water pump. A valve and a water pump are orderly arranged between water sides of the first condenser and the second evaporator in series. According to the invention, geothermic tail water is adopted as a heat source so as to conform to energy saving and emission reduction requirements and be beneficial to environmental protection; and besides the utilization efficiency of the geothermic resources is improved, the system has a remarkable effect on reducing the emission of contaminants.