The invention discloses a remote online maintenance apparatus and method of an electric vehicle. The apparatus comprises a remote processing terminal and a remote maintenance terminal, the remote processing terminal comprises a CPU processing terminal, an output end of the CPU processing terminal is electrically connected with a display and an indicator lamp separately, an input end of the CPU processing terminal is electrically connected with a control module, and the input end of the CPU processing terminal is electrically connected with a first storage module and a first switch bidirectionally. According to the remote online maintenance apparatus disclosed by the invention, the remote processing terminal, the remote maintenance terminal, the CPU processing terminal, the display, the control module, the first switch, a first GPRS data transmission module, a second GPRS data transmission module, a second switch, a microprocessor, a feedback module, a camera module and a maintenance module are provided to solve the problem that the existing maintenance apparatus cannot perform remote operation, the remote online maintenance apparatus of the electric vehicle has the advantages of being able to perform remote online maintenance, thereby facilitating the use of users improving the working efficiency of the users, and thus the remote online maintenance apparatus is worthy of promotion.