Disclosed is a method for manufacturing a sensor module that generates heat through an electric resistor adapted to be exposed to a gas, and outputs a temperature change caused in the electric resistor according to a pressure of the gas, as a resistance change of the electric resistor. The method includes: forming an insulation layer on a substrate in which the insulation layer is an oxide film or a nitride film; and forming a conductor layer on the insulation layer under a temperature condition of 300° C. to 600° C., in which the conductor layer serves as the electric resistor.