The invention discloses a fully-automatic bronzing machine. The fully-automatic bronzing machine comprises a bronzing machine main body, an alumite winding mechanism and an alumite unwinding mechanism; the alumite unwinding mechanism comprises an unwinding bracket and a winding-unwinding reel mounted on the unwinding bracket; the alumite winding mechanism comprises a winding bracket and a winding-unwinding reel mounted on the winding bracket; the centers of the winding-unwinding reels are mounted on a reel main shaft, and a first winding-unwinding roller and a second winding-unwinding roller are symmetrically mounted on the positions, on the two sides of the reel main shaft, of the winding-unwinding reels; transmission rollers are arranged on the positions, on the upper portions of the first winding-unwinding roller and the second winding-unwinding roller, of the winding-unwinding reels; and reel tension adjusting mechanisms and cutting mechanisms are arranged on the positions, on thelower portions of first winding-unwinding roller and the second winding-unwinding roller, of the winding-unwinding reels correspondingly. According to the fully-automatic bronzing machine, the two sets of winding-unwinding reels which can wind and unwind uninterruptedly are designed, winding and unwinding of alumite can be conducted without shutting, the reel tension adjusting mechanisms are designed on the winding-unwinding reels, an external tension adjusting mechanism is designed on the bronzing machine main body, and the reel tension adjusting mechanisms and the external tension adjustingmechanism are mutually matched to adjust the winding tension and unwinding tension of the alumite.