NOVELTY - Active biological organic-inorganic fertilizer for tobacco comprises (in wt.%) an active agent (8-12), biologically fermented cake fertilizer (20-30) and an inorganic fertilizer (55-75). The active agent is humic acid. The humic acid as a fertilizer additive is obtained by hydrolyzing, nitrooxidizing, neutralizing, condensing, mixing, drying and crushing organic active substances. The biologically fermented cake fertilizer is prepared by using rapeseed meal, sesame meal and soybean meal as raw materials, adding functional microorganisms and fermenting by semi-closed piled fermentation process.    USE - Used as active biological organic-inorganic fertilizer for tobacco.    ADVANTAGE - The fertilizer is rich in nutrients; has high activity and efficiency; improves tobacco root environment, tobacco output, tobacco leaf quality and soil quality; enhances root activity; promotes leaf development, and satisfies the mineral nutrition requirements for tobacco growth; and reduces environmental pollution.    DETAILED DESCRIPTION - Active biological organic-inorganic fertilizer for tobacco comprises (in wt.%) an active agent (8-12), biologically fermented cake fertilizer (20-30) and an inorganic fertilizer (55-75). The active agent is humic acid. The humic acid as a fertilizer additive is obtained by hydrolyzing, nitrooxidizing, neutralizing, condensing, mixing, drying and crushing various organic active substances. The biologically fermented cake fertilizer is prepared by using (in wt.%) rapeseed meal (50-70), sesame meal (20-40) and soybean meal (10-20) as raw materials, adding functional microorganisms (3-5) and fermenting by semi-closed piled fermentation process. The inorganic fertilizer is prepared by mixing and processing (in wt.%) ammonium nitrate-phosphorus (10-20), monoammonium phosphate (20-30), potassium sulfate (7.5-15), potassium chloride (4-5) and trace elements (2-5). An INDEPENDENT CLAIM is also included for preparing the active biological organic-inorganic fertilizer for tobacco comprising: (i) selecting Stenotrophomonas maltophilia G12 or Bacillus pumilus K11 strain to digest crude protein in the cake meal to form biological active free amino acid and active small peptides, fermenting and amplifying strains; (ii) performing solid fermentation and digesting the cake meal to generate the biologically fermented cake fertilizer with biological active free amino acid and active small peptide by controlling the moisture of the above mentioned raw materials to 40-55%, regulating the pH to 8.8-9.0 using lime water, adding Stenotrophomonas maltophilia G12 or Bacillus pumilus K11 strain (3-5% of the total wt. of the mixed cake meal), mixing uniformly, and fermenting by semi-closed piled fermentation process; (iii) selecting humic acid as the active agent and obtaining humic acid as a fertilizer additive as mentioned above; (iv) preparing the inorganic fertilizer as mentioned above; and (v) uniformly mixing the active agent, the biological fermentation cake fertilizer and the inorganic fertilizer in their prescribed amount, performing tertiary crushing, quantifying and packaging the prepared active biological organic-inorganic fertilizer for tobacco.