NOVELTY - Formulation of tobacco waste biological organic fertilizer, where the tobacco waste biological organic fertilizer comprises (pts.wt.): 5-6 pts.wt. of tobacco waste, 0.5-1.5 pts.wt. of brown coal, 1.5-2.5 pts.wt. of live stock excrement and 1-2 pts.wt. of straw powder.    USE - The tobacco waste biological organic fertilizer is useful for fertilizing and protecting crops.    ADVANTAGE - The tobacco waste biological organic fertilizer has full nutrient elements and can condition the soil and activate the microorganism active rate in the soil; the invention can overcome soil to be hardened and can increase the air permeability of the soil; the fertilizer can effectively kill the insect pests in the coil and can increase the stress of the crops; the fertilizer can improve the stress reaction of the crops and can reduce the generation of deformation; the fertilizer is safe and non-toxic to human, live stock and environment; the biological organic fertilizer takes the tobacco waste of tobacco factory and tobacco waste of re-drying factory and straw powder as main raw materials so as to solve the problem that the tobacco waste of tobacco factory and tobacco waste of re-drying factory are difficult to be processed; the biological organic fertilizer avoids the second pollution caused by the tobacco waste and direct combustion of straw so that it is environment-friendly fertilizer.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is a method of preparing the tobacco waste biological organic fertilizer, comprising: (a) mixing tobacco waste, brown coal, live stock excrement and straw powder in the weight ratio and then mixing them uniformly; adding 0.3 pts.wt. of compound microorganism to the process of agitating and fermenting in a fermenting workshop for 48 hours; (b) utilizing an automatic overturning machine to overturn when the temperature is raised to 72 degrees C; overturning for one time every 12 hours in later 6-8 days; (c) evaporating water by the high temperature caused by microorganism fermentation in the process of overturning; processing aerobic fermentation at the same; detecting the product when the water content in the compost is reduced to less than 20%; and (d) quantitatively packaging the qualified product to obtain the product.