The invention provides an automatic alarm system for a fuse device. The automatic alarm system comprises the fuse device which is provided on a power line and includes a fixing frame and a drop-off type fuse provided on the fixing frame, a camera device for obtaining images of the fuse device, a fault information automatic alarm terminal and a remote control bench, wherein the fault information automatic alarm terminal comprises a fault judging unit, a fault information storing unit and a fault information sending unit. The fault judging unit is connected with the camera device to obtain the images of the fuse device on a real-time basis and compares the images with fault standard images stored in advance. If the similarity between the obtained images and the fault standard images reaches a set threshold, the fuse device is determined to be failed. Fault information and the fault location information are sent to the remote control bench through the fault information sending unit, and the fault information storage unit stores the fault information. The remote control bench receives the fault information and the fault location information, and an alarm is given off.