The invention provides a natural gas intelligent heating system. The system involves a temperature measuring sensor, a statistical filter, a storage analyzer, a heat calculator, a heat meter and an automatic combustor, wherein the input end of the statistical filter is connected with the output end of the temperature measuring sensor, the input end of the storage analyzer is connected with the output end of the statistical filter, the input end of the heat calculator is connected with the output end of the storage analyzer, the heat meter and the automatic combustor form a closed-loop controlsystem, and the input end of the closed-loop control system is connected with the output end of the storage analyzer. According to the natural gas intelligent heating system, the heat calculator calculates instantaneous heat consumption of a heating building according to a real-time outdoor air temperature measured by the temperature measuring sensor and data information of the heating building, then the instantaneous heat consumption is directly compared with actual output heat of a gas-fired boiler, the output heat of the gas-fired boiler is adjusted in time according to the comparison result, compared with an existing return water temperature control mode, the adjustment basis is more direct, the adjustment time is shorter, heat adjustment at a certain time period and a certain time point can be completed, adjustment is more accurate, and the conditions of output heat adjustment lag, indoor overheating or no heating cannot occur.