Sensing devices and correction method

A sensing device is provided. The sensing device includes a processor and a multi-sensor integrated on a chip. The multi-sensor includes a substrate and a temperature sensor, a pressure sensor, and an environment sensor which are disposed on the substrate. The temperature sensor senses a temperatire. The pressure sensor senses a pressure. The environment sensor senses an environment state. The processor obtains a first sensed temperature value through the temperature sensor when the environment sensor does not operate and obtains a second sensed temperature value through the temperature sensor when the environment sensor operates. The processor obtains a sensed pressure value through the pressure sensor. The processor obtains at least one temperature correction reference of the pressure sensor according to the first sensed temperature and the second sensed temperature and corrects the sensed pressure value according to the temperature correction reference to generate a corrected pressure value.