The anode device for continuous electroplating of linear poor conductor consists of at least one anode unit. The anode unit consists of one anode and two insulating baffles, the anode has inside flared passage, and these two insulating baffles are connected separately on the upper port and the lower port of the passage and have through hole with axis coinciding with the axis of the passage. The anode device can obtain coating with high homogeneity, compact crystallization, high corrosion resistance and excellent mechanical performance. Owing to the special shape of anode to control the current density for electrically depositing metal, the single electroplating bath may be designed in maximum anode length, and this makes it possible to realize continuous electroplating production in high production efficiency with minimum number of electroplating baths.