NOVELTY - A bacteria-containing biological organic fertilizer comprises (pts. wt.): clean water (100-500), cellulase (2-5), efficient microbes (EM) bacterial liquid (2-5), Trichoderma harzianum chlamydospore powder (0.5-2), organic materials (500-700), plant ash (0-200), granulated auxiliary (1-10), powdery bacteria powder carrier (1-3) and plant oil (1-5). The organic materials are chaff, weed powder, straw powder, dry dung powder and/or furfural residue and vinasse.    USE - Bacteria-containing biological organic fertilizer.    ADVANTAGE - The fertilizer thoroughly decomposed the raw material, large particle hardness, less impurity of bacteria, high bacteria survival rate and comprehensive nutrition as compared with prior art. It also exhibits diseases prevention and treatment effects to crops as well as production and efficiency enhancement performance.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the biological organic fertilizer which comprises (A) provided above raw materials and uniformly mixing raw materials containing organic materials or raw materials containing organic materials and plant ash to obtain fermenting material; (B) dissolving cellulase and EM bacteria liquid in water to prepare material fermentation spray liquid; (C) spraying fermentation spray liquid onto material to be fermented and turning over for several times to make spray liquid uniform and obtaining fermentation material; (D) performing anaerobic fermentation for 6-7 days, during which one heap turning is conducted per day and conducting aerobic fermentation for 15-20 days, during which one heap turning is conducted per day, emitting sweet smell which means that raw material are fermented and decomposed thoroughly; (E) adding granulating auxiliary into fermented and decomposed raw material; (F) placing mixture into disk or rotor drum granulator, granulating with adding water vapor auxiliary, sending granules into storage hopper after being dried with high temperature, sieved and cooled, and sending granules into coating machine via belt weigher quantitatively; (G) spraying plant oil onto fertilizer granules in coating machine and uniformly mixing T. harzianum chlamydospore powder, T. viride chlamydospore powder and powdery bacterial powder carrier in feed mixer and sending them in coating machine; and (H) coating powder mixture above on particles coated with plant oil to obtain desired fertilizer.