The invention relates to a speed chain electricity meter detecting assembly line. Double layers of sliding plates are adopted. A work area comprises nineteen detecting stations. At the first station, electricity meters are fed, and 12-volt electricity is added to detect whether the electricity meters are powered on or not. The second station is vacant. At the third station, a bar code and a tool plate ID are read. The fourth station and the fifth station are vacant. The sixth station, the seventh station, the eighth station, the ninth station, the tenth station, the eleventh station, the twelfth station and the thirteenth station are in a group, and a stopper and a photoelectric switch are arranged at the tail end of the thirteenth station. After the electricity meters operate to the thirteenth station and a light path is blocked, a power-up system powers up the electricity meters on the tool plate and circularly displays flat valley electricity meter data, and each station is correspondingly provided with one vision camera system to shoot the electricity meters on the stations. The fourteenth station and the fifteenth station serve as standby stations to carry out emergency processing and manual intervention for special conditions. The sixteenth station, the seventeenth station and the eighteenth station are vacant. The nineteenth station is an offline station, and the detected electricity meters are discharged to be loaded. The speed chain electricity meter detecting assembly line has the advantages of being fast in power on, advanced in vision recognition, high in detecting efficiency and the like.