主要讨论薄膜气敏元件加热电阻的设计及功耗的计算，同时也讨论加热电阻材料必须具备的条件。根据传热学原理，推导出计算功耗的表达式，并编制出相应的计算机程序。对于工作在３００℃时气敏元件功率损耗，其理论计算与实验相符。因此可根据该程序方便地计算出不同尺寸芯片在不同工作温度时相应的加热功率。 Mainly discuss the design and power consumption calculation of the heating resistor of the film gas sensor, and also discuss the conditions that must be possessed by the heating resistor material. According to the principle of heat transfer, the expression of calculating power dissipation is deduced and the corresponding computer program is compiled. For working at 300 ℃ gas sensor power loss, the theoretical calculations and experiments. Therefore, according to the program can easily calculate the different sizes of chips at different operating temperatures, the corresponding heating power.