the invention discloses a biological coal and manufacturing method, which comprises the following steps: adding 68% -82% raw coal, 8%-20% plant dry powder, 10%-15% ferment liquid in the stirrer; stirring evenly; allocating the ferment liquid with 0.8%-1.6% flour, 0.8%-1.6% wheat bran, 0.8% -1.6% starch, 0.08%-0.12% caustic soda, 0.8%-1.6% ferment powder, 94%-96% water; controlling temperature and pH value of ferment liquid; grinding; stirring; adding sulfur-fixing combustion adjuvant with 30%-40% hydroperoxide, sodium silicate and magnesia to stir evenly; moulding to obtain the product. |