The invention discloses a hot water, electricity generation, refrigeration, steam, heating and desalination six co-production system capable of utilizing cooling capacity. The hot water, electricity generation, refrigeration, steam, heating and desalination six co-production system comprises a sea water desalination subsystem, a low-temperature electricity generation subsystem, a refrigeration air conditioner subsystem and a hot water and steam heating subsystem which communicate together through pipelines. Due to the fact that liquefied natural gas which can be stored is used as the only energy for the six co-production system, hot water production, electricity generation, refrigeration air conditioning, steam production and sea water desalination are achieved simultaneously, and functions are complete. The six co-production system mainly comprises heat exchangers, an expansion machine and a pump, and a gas turbine, a lithium-bromide absorption-type refrigerating machine and the like which are required by conventional CCHP technology are not needed. The cooling capacity of the liquefied natural gas (LNG) is fully used, the comprehensive step utilization coefficient of the energy is high, and the six co-production system has the advantages of being capable of reducing investment, easy to control, high in energy efficiency ratio and the like.