The utility model discloses an electric power work on-site safe region early-warning device. The electric power work on-site safe region early-warning device comprises an image acquisition module, an image processing and safety monitoring module, a data transmission module, an alarm module and a power supply module, wherein the image acquisition module comprises a camera, a CCD acquisition chip connected with the camera, and an A/D data conversion circuit and a CCD timing sequence drive circuit which are connected with the CCD acquisition chip; the image processing and safety monitoring module comprises an DSP chip and a memory connected with the DSP chip; the data transmission module comprises a USB interface and an Ethernet interface; and the alarm module comprises an alarm lamp and a buzzer which are connected with the DSP chip. When the image processing and safety monitoring module triggers an alarm, an early warning is sent to working personnel. Compared with a conventional monitoring device, the electric power work on-site safe region early-warning device is simple in structure, small in size, convenient to use, maintain and move, and high in data transmission speed.