The invention discloses a multi-parameter sensor for simultaneous measurement of differential pressure, pressure and temperature. The piezoresistive static pressure sensor and the high-precision integrated temperature measurement chip that detects the digital output of the sensor itself and the temperature of the medium in contact with it. The three sensors are used to detect various parameters such as differential pressure, pressure, and temperature. It has the characteristics of small and exquisite appearance, light weight, and is easy to manufacture by conventional methods. Transmitters with different functions manufactured on this basis can be widely used in chemical industry, petroleum, metallurgy, power station and other departments to measure the pressure, liquid level, differential pressure, flow and other thermal engineering basics of liquid, gas and steam. parameters, can have a variety of compensation characteristics, and has a good development space.