The invention discloses a metal sheath embossing machine. The embossing machine is characterized by comprising a cutter head, a guide rod is arranged on the cutter head, a sliding cutter holder is connected to the cutter head through the guide rod, and the sliding cutter holder can move up and down along the guide rod; a rotating shaft capable of rotating is arranged on the sliding cutter holder,and an embossing cutter is connected to the rotating shaft; the cutter head is further connected with a push disc through a connecting rod, a push block is arranged on the push disc, and a slope is arranged on the push block; and a push wheel matched with the slope is arranged on the sliding cutter holder. According to the embossing machine, the angle and the embossing depth of the embossing cutter can be adjusted conveniently according to actual needs.