Energy-saving gas steam generator, make up of the level controller, strong exhaust fan, intelligent control system assembly, heat recovery system, the terminal pressure control (temperature control requirements can be supplied with temperature control) . Gas solenoid valve can be manually adjusted to control the size of the fire; the use of the wind turbine, combustion negative pressure to solve the problem of incomplete combustion; fire row burners, electronic ignition safety and reliability; rugged stainless steel tube heat exchanger; using the latest combustion heat exchanger design and manufacturing technology, a key to start, intelligent control; the use of liquefied petroleum gas, natural gas, artificial gas and other gases as fuel.