The invention discloses a three-phase load amplification monitoring feedback system including an intelligent terminal. The intelligent terminal includes a network camera, a DTU unit, a communication controller, a temperature and humidity controller, a gas sensor, a feeder cabinet state, a bus joint temperature measurement unit, other communication interfaces, a touch screen display unit, a real-time clock, a voice synthesis and power amplification unit, an infrared transceiver unit, an SRAM unit, a FLASH unit, a main controller, a decoder, a latch, a first isolation unit, a second isolation unit, and switching output. The three-phase load amplification monitoring feedback system is reasonable in design and convenient to use. A main control system of a TMS320F2833 and STM32F103 double-CPU structure is adopted to monitor electrical information efficiently and in real time. Meanwhile, the operating condition of equipment can be intelligently diagnosed and recorded, the field temperature and humidity and the image can be monitored, and the operation and use conditions of the equipment can be known in real time.