The utility model discloses a device for real-time monitoring of temperature and humidity of electronic power modules. The device comprises digital temperature and humidity sensors, main control boards and an upper computer, which are connected together successively. The digital temperature and humidity sensors are disposed in the electronic power modules, the temperature and humidity of which need to be detected. With the digital temperature and humidity sensors disposed in the electronic power modules, the device realizes real-time monitoring of the temperature and humidity of the electronic power modules, is capable of giving out an alarm when the temperature and humidity are out of range so that requisite measures can be taken, and thus enables the electronic power modules to have the advantages of stability, good anti-jamming performance, high reliability and long service lifetime.