NOVELTY - Method for cultivating mushroom, involves selecting dried crop straw and raw straw depending on crop as raw material, adding gypsum and water, uniformly mixing materials, adding mixed straw into press device, inserting wood or short stick into pressed straw under clean environment, making holes in pressed straw, inoculating edible fungi to holes, sterilizing pressed straw, loading sterilized mixture in high-density polyethylene bags, transferring bags into indoor, maintaining bags in shaded and well-ventilated greenhouses, and harvesting mushroom.    USE - The method is useful for cultivating mushroom (claimed).    ADVANTAGE - The method is environmentally-friendly, increases yield and quality of mushroom and income of farmers, and consumes less energy.    DETAILED DESCRIPTION - Method for cultivating mushroom, involves (a) selecting dried crop straw (dried straw is crushed into diameter of 3-10 mm) and 100 pts. wt. raw straw depending on crop as raw material, where the dried crop straw is bean straw, corn straw or cotton straw, and raw straw is wheat bran or cottonseed hulls, adding 1.5 pts. wt. gypsum and 30 pts. wt. water to the dried crop straw and raw straw, and uniformly mixing materials, (b) adding mixed straw into press device, where the pressed straw has diameter of 8-10 cm, length of 30-50 cm, and density of 0.6-1 g/cm3, and water content of 15%, (c) inserting wood or short stick into pressed straw under clean environment, making holes in pressed straw, inoculating 4 wt.% edible fungi to holes, sterilizing pressed straw at 97-100 degrees C for 12 hours, loading sterilized mixture in high-density polyethylene bags having thickness of 4-5 mm, transferring bags into indoor, and maintaining bags at room temperature, (d) further maintaining bags in shaded and well-ventilated greenhouses or shaded and air-conditioned indoor, where the culture temperature is 20-25 degrees C and relative humidity is 60-70%, and mycelium is covered in 45-100 days, and (e) harvesting mushroom after mycelium is matured during fruiting stage.