The invention discloses a method for collecting spore powder by cultivating ganoderma with a layered rack type stereoscopic bag material. The method is characterized by comprises the following steps of: planting ganoderma in a common bag material cultivation mode for preparing raw materials, mixing materials, bagging and sterilizing, inoculating and cultivating, and after the bag is full of hypha, and growing ganoderma by adopting a layered rack type stereoscopic mode, wherein the layered rack type stereoscopic mode comprises the following key steps: building the rack and arranging bags, paving film and growing ganoderma, covering the rack with thin film and collecting spore powder in time. By adopting the method disclosed by the invention, 20000-24000 bags of ganoderma can be planted permu; and the method has the characteristics that the management is convenient to perform, and the ganoderma and spore powder have high yield and good quality.