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Biogas sludge is rich in nutrients, has a loose texture, good moisture-retaining properties, and a moderate pH level, making it an excellent substrate for the artificial cultivation of edible mushrooms. The substrate after cultivating edible mushrooms can also be used as feed for pigs or cows. Pig and cow manure can also be used as raw materials for biogas fermentation. Oyster mushrooms are one of the fungi with the largest cultivation area and highest yield in China. Cultivating oyster mushrooms using biogas slurry yields high success rates, stable production, and good economic benefits. 1. Seasonal arrangement. High-temperature oyster mushrooms are planted and grow from April to August, while low- to medium-temperature oyster mushrooms are planted in August and harvested in June of the following year. 2. Raw material selection. The raw materials for growing oyster mushrooms are diverse, including crops, corn cobs, peanut shells, sawdust, straw, wood ear mushroom residue, sugarcane residue, leafy vegetables, various types of manure, biogas sludge, and edible mushroom residues. Raw material requirements: fresh, dry, free from mold, and free from impurities. 3. Scientific ingredient selection. 53% crop straws (such as corn cobs, wood chips, straw, etc.), 30% biogas residue or mushroom residue, 10% rice sugar or wheat bran, 2% peanut bran, 1% gypsum powder, 2% lime powder, 2% compound fertilizer; material-to-water ratio of 1:1.25. 4. Bagging. Mix the aforementioned ingredients evenly and place them in a polyethylene plastic bag measuring 22 cm × 45 cm × 10 cm, then sterilize them at atmospheric pressure for 10 hours. 5. Fungus growth management. After inoculation, mycelium growth can occur both indoors and outdoors; the maximum temperature should not exceed 28°C. It is necessary to regularly check the temperature inside the bags – if it rises above 28°C, the contents should be turned over immediately, as high temperatures can kill the mycelium. Under normal conditions, the mycelium generally fills the bag in 25 to 30 days. 6. Mushroom fruiting management. During the fruiting period, pay attention to ventilation; ensure there are no dead corners in the airflow, and provide some diffused light. Until it grows up.