The invention belongs to the technical field of heat energy storage and utilization, and particularly relates to an emission-free and pollution-free liquid heat energy storage and utilization device. The main purpose is to provide a liquid energy storage technology production device system which is free of pollution and emission, and capable of achieving energy storage and saving and achieving heat energy reusing and the like. The emission-free and pollution-free liquid heat energy storage and utilization device comprises a high-temperature fused salt storage tank system 2001 unit which is used for storing high-temperature fused salt solutions, a low-temperature fused salt storage tank system 2002 unit which is used for storing low-temperature fused salt solutions, a heat exchange and heat transfer system and a generator set system.