The invention discloses a cultivation method for preventing rice blast. The cultivation method comprises the steps that seed soaking treatment is conducted using a seed-soaking solution, the seed-soaking solution contains 2%-10% of oxygen dissolution concentration and rice rhizosphere isolates; another type of rice rhizosphere isolates is applied to the soil of rice planting; in the jointing period, 10%-20% volume percentage of an ethanol solution is sprayed for the plants, the ethanol solution also contains: impatiens balsamina extraction, small fennel extraction, licorice extraction and pearl grass extraction; in the tiller period, another rice rhizosphere isolates solution of 1x103 to 1x105CFU/plant is sprayed to the plants; in the grouting period, a rice rhizosphere isolates solution of 1x104 to 1x106CFU/plant is sprayed to the plants; in the maturity period, another rice rhizosphere isolates solution of 1x105 to 1x107CFU/plant is sprayed to the plants. In the jointing, tillering, grouting and maturity periods, an aqueous solution is also irrigated to the plants, the aqueous solution contains ginger juice, artemisia argyi juice, chitin oligosaccharides, garlic juice, extracts of sindapsus aureus, clothianidin, coffee powder and tea leaves.