Method for rapidly accumulating micro-algae intracellular grease

The invention relates to a method for rapidly accumulating micro-algae intracellular grease, which comprises steps of heterotrophic culturing, dilution, photo-inductive culturing, micro-algae collection and grease extraction and the like. By using the method, advantages of rapid micro-algae intracellular grease accumulation in the photo-inductive stage are brought into full play so as to provide significant technical means for solving the problem of exceeded cost caused by insufficient raw materials in process of preparing biological fuels (such as diesel oil, aviation kerosene and the like) in a large scale.