Pressure sensor module

A pressure sensor module (1) that detects a fluid pressure on the basis of a differential pressure between a reference pressure and the fluid pressure, the pressure sensor module (1) comprising:

• a housing (10);
• a sensor element (30) configured to contact each of the reference pressure and the fluid pressure;
• a support member (70) that supports the sensor element (30) and is held in the housing (10);
• a first pressure passage (50) that guides the fluid pressure to a first contact surface (31) of the sensor element (30);
• and
• a second pressure passage (60) that is sealed from the first pressure passage (50) and guides the reference pressure to a second contact surface (33) of the sensor element (30), wherein
• the support member (70) is a structure that is formed by integrating an elastic material section (81) and a hard material section (75), the elastic material section (81) exerting sealing performance on the first pressure passage (50) and the second pressure passage (60) and being configured to be elastically deformed, and the hard material section (75) having a rigidity higher than a rigidity of the elastic material section (81).