The invention discloses a method for cultivating glossy ganoderma and collecting glossy ganoderma spore powder. The method comprises the following steps of: a, cultivating the glossy ganoderma in the conventional method, before the cracking period of fully-ridged glossy ganoderma, arranging a layer of supporting network right above the glossy ganoderma to emergence space of a ridging surface, paving a plastic film on the integral supporting network, and shearing seams on the parts of the supporting network and the plastic film, which are opposite to the glossy ganoderma, so that the glossy ganoderma can come out from the seams; b, when the mature glossy ganoderma sporophores start to produce spore powder, inserting and cushioning a paper cushion on the root of each plant of glossy ganoderma sporophore, and arranging tea filter paper or a non-woven fabric arc shed on the supporting network or the plastic film; and c, harvesting the spore powder when spores of the glossy ganoderma sporophores are produced completely. By the method, the yield of the glossy ganoderma is improved by over 20 percent, the collection rate of the spore powder is maximized to over 98 percent, the glossy ganoderma sporophores are good in growing development, thin in skin and thick in flesh, the incubated spore quantity is maximized, the brown stain rate of the glossy ganoderma is less than 0.2 percent, the spores are robust and full, the content of active ingredients is higher, and the immigration source of the pollution of harmful substances in plastic materials is avoided.