The invention discloses a multi-parameter sensor for measuring differential pressure/pressure/temperature, characterized in that there is a differential capacitance bellows differential pressure sensor packed combination in a casing; pressure resistance type static pressure sensor, detecting sensor and medium temperature digital output high-accuracy integrated temperature sensing chip are used to detect differential pressure, pressure, and temperature parameters. And it has characters of small and exquisite, lightweight, and easy to manufacture by routine process. On this basis, various manufactured transducers of different functions can be widely applied to chemical departments, petroleum departments, metallurgy departments, power stations, etc, for detecting pressure, level, differential pressure, flow and other basic thermal parameters of liquid, gas and steam, and can posses multiple compensating properties and very good development space.