The charcoal briquette machine production line can be used in producing high quality charcoal shaft with low cost from sawdust, The machine-made charcoal has no smoke and smell, no pollution and residuals, its burning time is three times of the ordinary charcoal. Its carbon content reaches 85% or more and its calorific value reaches 7000-9000 kilocalorie, It is applicable in metallurgy and chemical industries, especially in the barbecue industry. It has become indispensable fuel in the food industry.