A network-type temperature-controlled hanging extinguishing system includes: a main fire-fighting pipe which has at least one fire-extinguishing medium support port; at least one fire-extinguishing medium pressure bearing tank communicated with the main fire-fighting pipe; at least one fire sprinkler valve which is communicated with the main fire-fighting pipe and includes a memory alloy part adapted for controlling opening and closing a valve body; and at least open nozzle which is communicated with the fire sprinkler valve, such that when the fire sprinkler valve is opened, the fire-extinguishing medium is sprayed, and when the fire sprinkler valve is closed, the fire-extinguishing medium is stopped spraying. An amount of the fire-extinguishing medium pressure bearing tanks is different from that of the open nozzles; a user is able to select an appropriate amount of fire-extinguishing medium pressure bearing tanks as required to reduce the manufacturing, assembly and maintenance cost of the entire system.