With the acceleration of urbanization, new building area is expanding and energy consumption of unit building area is increasing rapidly. China’s urban building energy consumption has reached 30% of the total social energy consumption, heating energy consumption in the northern region of China is up to more than half of the total building energy consumption. In order to improve the problem of heat consumption of the serious waste, high power consumption (30%-50%), the poor water supply stability of heating system and high difficulty of debugging system, the paper puts forward a concrete application of the adjustable jet pump in pipe network transformation of central heating system. The engineering practice analysis shows that the new heating pipe network system based on the adjustable jet pump technology can save energy more than the traditional central heating system under the premise of satisfying the thermal comfort of thermal user.