An agricultural chemical for preventing and eliminating fungus diseases of paddy rice is prepared from tricyclazole, triazolone, Jinggangmycetin, (validamycin A), xyloid calcium or xyloid sodium, NNO, sodium laurylsulfate, white carbon black and diatomite through mixing, crushing, capturing and mixing again, and features special effect, strong systemic nature, long action period, elongating the life of functional leaf and increasing yield.