An automatic bamboo stick-branding machine comprises a base, and is characterized in that: supporting plates are mounted on the base, a main motor is mounted on the left ends of the supporting plates, a first shaft is mounted on the top right corners of the top left parts of the supporting plates, a big first shaft eccentric wheel is mounted at the middle of the first shaft, and is wrapped by an eccentric sleeve, the right side of the eccentric sleeve is connected with a dovetailed slider, an insulation board is mounted on the right side of the dovetailed slider, a hooked discharging driving lever is mounted on the front end of the insulation board, a left turning plate is mounted on the right side of the insulation board, a left heating plate is mounted on the right side of the left turning plate, a front-branding die is mounted on the left heating plate, a trough-fixing plate is mounted on the top right ends of the supporting plates, two vertical trough holders are symmetrically mounted at the front and the rear ends of the trough-fixing plate, trough guide ways are mounted on the trough holders, and a trough is mounted between the front and the rear trough guide ways. The automatic bamboo stick-branding machine solves the problem that the conventional bamboo stick-branding equipment cannot carry out continuous branding, and is suitable for branding characters or signs.