Portable digital barometer

The utility model discloses a portable digital barometer, comprising a pressure detection module, a data conversion module, a single chip module, a digital display module and a power supply module, which are orderly connected, wherein the power supply module is respectively connected with the pressure detection module, the data conversion module, the single chip module and the data display module. The pressure sensor adopted by the portable digital barometer is connected with the data conversion module and is a core element of the entire system; and the main role of the portable digital barometer is to detect the size of pressure, control change of the pressure and measure physical parameters. The pressure value can be measured in real time by the structure and displayed in a digital form; high precision still can be obtained in measurement of air pressure under the situation of low latitude; and the portable digital barometer has the characteristics of being small in volume, light in weight, convenient to carry and low in cost.