NOVELTY - Cultivating mushroom using corn straw, by (a) selecting corn straw as main raw material; (b) selecting sawdust, wheat bran, corn powder and lime as auxiliary materials, (c) preparing mushroom bag; (d) drying and cutting selected corn straw, immersing corn straw in water and drying corn straw, (e) inoculating the sterilized bag with strain; (f) culturing strain; and (g) packing the mushroom, when mycelium grows and reaches physiological maturity.    USE - The method is useful for cultivating mushroom using corn straw (claimed).    ADVANTAGE - The cultivation method is cost-effective, has high biological conversion rate of mushroom, improves growth of hyphae, and reduces labor for crushing corn straw, thus has high economic benefits.    DETAILED DESCRIPTION - Method for cultivating mushroom using corn straw, involves (a) selecting corn straw as main raw material; (b) selecting sawdust, wheat bran, corn powder and lime as auxiliary materials, (c) preparing mushroom bag; and (d) drying the selected normal colored stripe shaped corn straw free from mildew, cutting the corn straw into sections of 25-30 cm length and immersing in water for 20-24 hours and drying the corn straw, where the auxiliary material is prepared by (i) weighing 75-78% sawdust, 14-17% wheat bran, 7% corn powder and 1% lime; (ii) mixing the auxiliary material and stirring uniformly to obtain mixed material, adding suitable amount of water and adjusting the moisture content to 60-65%, and the mushroom bag is prepared by (A) selecting plastic cylindrical bag having 30x 40-45 cm area with two side openings and one side tied to a rope tightly, filling the bag from the bottom with auxiliary material as first layer to the thickness of 2-3 cm, and filling corn straw to the thickness of 2-3 cm; and (B) sterilizing the bag according to the existing method; (e) inoculating the sterilized bag with 20-25 strains under a clean environment; (f) culturing the strains in a culturing chamber according to the culturing management, where the culture environment is maintained dark at room temperature of 15-30 degrees C and 60-70% relative humidity and ventilated with fresh air; and (g) packing the mushroom, when mycelium grows and reaches physiological maturity to turn color into fruiting, in the covered bag, where the packing is done according to the existing package management of cultivating mushroom until it reaches fruiting and harvesting until the recovery process is complete.