Portable mask replacement intelligent reminder suitable for old people

The invention provides a portable mask replacement intelligent reminder suitable for old people, and belongs to the technical field of intelligent equipment. The reminder comprises a reminding device and a detection device, wherein the reminding device comprises a reminding device shell, a reminding device cover body, a buzzer, a light emitting diode, a Bluetooth module and a reminding controller; the detection device comprises a detection device shell, a detection device cover body, a timer, a humidity sensor, an oxygen sensor, a temperature sensor, a pressure sensor, a detection controller and a wireless communication module. The reminding device and the detection device are arranged on the outer side and the inner side of a breathing opening of the mask respectively and are fixedly connected with each other through a magnetic ring at the bottom of the shell. When the wearing time recorded by the timer or the data detected by the humidity sensor and the oxygen sensor reaches a set value, the detection contr