NOVELTY - Organic fertilizer composition comprises horse manure, rapeseed residues, sesame seed residues, wine lees, kudzu root residues, water, potassium humate, magnesium nitrate, bentonite, Sporotrichum thermophile, Streptomyces griseus, Candida lipolytica, S.microflavus, Glomus mosseae, and S.jingyangensis.    USE - The organic fertilizer composition is useful for tomatoes.    ADVANTAGE - The organic fertilizer composition provides good fertilization effect, improves disease resisting ability of tomatoes, promotes high yield production of tomatoes in greenhouse, reduces probability of occurrence of mildew disease in tomato leaves, and is prepared using organic wastes by microbial reactions and hence discharge of wastes is reduced.    DETAILED DESCRIPTION - Organic fertilizer composition comprises 223-255 pts. wt. horse manure, 69-78 pts. wt. rapeseed residues, 36-40 pts. wt. sesame seed residues, 25-30 pts. wt. wine lees, 12-14 pts. wt. kudzu root residues, 110-130 pts. wt. water, 7-9 pts. wt. potassium humate, 6-8 pts. wt. magnesium nitrate, 43-50 pts. wt. bentonite, 1.5-2 pts. wt. Sporotrichum thermophile, 1-1.5 pts. wt. Streptomyces griseus, 0.8-1.2 pts. wt. Candida lipolytica, 0.6-0.8 pt. wt. S.microflavus, 0.8-1 pt. wt. Glomus mosseae, and 1-1.5 pts. wt. S.jingyangensis. An INDEPENDENT CLAIM is included for preparation method of the above-mentioned organic fertilizer composition, which involves (a) mixing 230 pts. wt. horse manure, 70 pts. wt. rapeseed residues, 38 pts. wt. sesame seed residues, 27 pts. wt. wine lees, 13 pts. wt. kudzu root residues, 45 pts. wt. bentonite and 120 pts. wt. water, heating obtained mixture to 100-110 degrees C under constant stirring condition, and incubating the mixture for 3-4 hours, (b) mixing 1.6 pts. wt. S.thermophile and 1.2 pts. wt. S.griseus, adding obtained mixture to product obtained in the step (a), stirring mixture uniformly, and reacting the mixture at 58-68 degrees C for 13-16 days, (c) mixing 1 pt. wt. C.lipolytica, 0.7 pt. wt. S.microflavus, 0.9 pt. wt. G.mosseae, and 1.4 pts. wt. S.jingyangensis, adding obtained mixture to product obtained in the step (b), stirring mixture uniformly, and reacting the mixture at 28-38 degrees C for 28-30 days, and (d) mixing 8 pts. wt. potassium humate and 7 pts. wt. magnesium nitrate, adding obtained mixture to product obtained in the step (c), stirring mixture uniformly, reacting the mixture at 20-28 degrees C for 25-28 days, and drying product.