NOVELTY - Composting agent comprises biodegradable cellulose, protein, deodorant, bioorganic fertilizer composition, and microbial inoculant, where the microbial inoculant comprises disease resistant strains chosen from 0.5-2 pts. wt. Bacillus subtilis, 0.5-2 pts. wt. Streptomyces microflavus, 0.5-2 pts. wt. Trichoderma longibrachiatum, and 0.5-2 pts. wt. B.mucilaginosus, and agent comprises viable cell count of 6x 108 cells/g.    USE - The agent is useful for composting livestock manure, inhibiting Fusarium oxysporum, increasing crop yield, and improving vegetable disease resistance and its yield (all claimed). The vegetable is Chinese cabbage or onion.    ADVANTAGE - The agent increases Chinese cabbage yield by 17.4%, has ability to decompose cellulose and proteins, and exhibits disease control efficiency of 56%, and thus increases onion yield by 20.5%.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for composting livestock manure using the agent which involves (a) adjusting carbon to nitrogen ratio of livestock manure to 25-30:1, and water content to 55-60%, adding 1 kg agent per 5 kg manure, and mixing the agent and manure evenly, (b) preprocessing the manure by piling the manure in trapezoid shape, where the pile has a width of 1 m, pile bottom width of 2 m, height of 0.8-1 m during summer and autumn, height of 1.2-1.4 m during winter and spring, and area of not less than 5 m2, (c) fermenting the manure pile by maintaining the pile of 20-30 cm depth at temperature 55 degrees C for three days, and turning the pile once, where if the initial temperature does not rise, adjust the water ratio to a suitable amount until the temperature rises again, (d) fermenting the pile again by raising temperature to 55 degrees C, maintaining at specified temperature for 3 days, stirring the pile once, and turning the pile, and (e) stopping turning of pile after temperature has raised to a certain limit, fermenting the manure pile for 15-25 days until water content reaches 30% or less, and terminating fermentation process.