The invention discloses an electrical control cabinet high temperature monitoring alarm system based on a sensor technology, and relates to the technical field of an electrical control cabinet. The electrical control cabinet high temperature monitoring alarm system based on a sensor technology includes a main controller, a voltage sensor, a humidity sensor, a temperature sensor, a display device,an auxiliary controller, a drive unit, a switch, a GSM module, a data receiving and analysis module, a database, a cloud storage unit, an intelligent terminal, a timing device and an alarm device, wherein the voltage sensor, the humidity sensor, and the temperature sensor are in communication connection with the auxiliary controller. For the electrical control cabinet high temperature monitoring alarm system based on a sensor technology, by setting the voltage sensor, the auxiliary controller and the display device, by acquiring the temperature information and the humidity information in the electrical control cabinet through the temperature sensor and the humidity sensor in real time, a user can visually know about the state of the electrical control cabinet and the electrical control cabinet high temperature monitoring alarm system based on a sensor technology has the advantages of being simple and practical, being able to realize remote monitoring, being accurate in data acquisition, being convenient for management, and being able to avoid a safety loophole of the electrical control cabinet.