First, control is to control temperature well in the early stage. 3 to 4 days after bag removal, the temperature inside the mushroom bed cover film is controlled within 25°C, and it is not necessary to remove the film for ventilation. After 4 days ventilation every day 1 or 2 times, every time the ventilation time is 30-40 minutes, increase the temperature difference, so that the growth of aerial hyphae is inhibited, and will not be excessively prosperous. Second, spray the water off. Generally 7-8 days after bag removal, the mycelium begins to spit out yellow water beads, which should be treated in time, otherwise it will cause self-dissolution of the mycelia and be easy to infect the bacteria, or cause the bacteria to be thickened. Therefore, it must be sprayed with water in a timely manner. On the first day, lightly spray on the tube with a sprayer, dilute the yellow waterdrops, and rinse with a pressure sprayer the next day until the tube is slightly dry. Third, through the good ventilation and ventilation work. Ventilate no less than twice a day for 30 minutes. When the air temperature is high, it is necessary to remove the film and ventilate sooner or later, increase the temperature difference, and control the temperature of the mushroom bed during the color conversion period at 15°C to 20°C. If it is found that the color change is too light or does not change color, spray water to humidify it, and then cover the film, or place the fungus tube lying on the ground, and use the ground temperature and wetness to promote the color change.