“Sooner rather than later” is applied in winter cultivation and spring cultivation of Shiitake. In general, the best inoculation and fungi sack-making period of winter cultivation is from November to the end of next February. The best period of spring cultivation is from the first ten days of January to the last ten days of March. Too late inoculation time should be avoided because that too late inoculation time will bring high temperature, low success rate and easy to be infected sundry fungus, it also hinder the colouring of fungi sack, the physiological maturity of spawns and increase the difficulties of over-summering. The best period of inoculation in autumn cultivation is from the last ten days of August to the end of September. The temperature varies from place to place, so, people should master flexibly and inoculate in under 30 degrees.