The invention discloses a matrix-type electroplating production line. Multiple tanks of the matrix-type electroplating production line are arranged in a matrix way. The multiple rows of the tanks are tightly arranged side by side. A bridge crane for conveying workpieces can walk forwards, backwards and sideways on the production line. A frame of the production line has an assembled structure, the tanks are arranged on the frame, the bridge crane is installed in a high rail way and a guide rail is supported by stand columns at two sides of the production line. The bridge crane is provided with a gear motor, a suspension hook, a plurality of machines and an electric appliance protection device. A rotary encoder and a rack-and-pinion structure are used for bridge crane positioning. A tank chain-type structure is used for bridge crane walking. A tank cover is provided with a horizontal movement seal cover plate.