The invention discloses an all-component extraction method of lucid ganoderma. The method comprises the following steps: carrying out low-temperature ultramicro molecular grinding, carrying out supercritical carbon dioxide extraction on lucid ganoderma essence powder, extracting triterpenoids with alcohol, extracting ganoderan, extracting protein, extracting other active substances, extracting nutrient substances such as amino acids and the like, and extracting residual nutrient components. Most nutritional ingredients and active ingredients in the lucid ganoderma can be obtained through classified extraction, different ingredients are used for different purposes, the overall utilization rate of the lucid ganoderma is far higher than that of a common extraction method, the total yield of the extract can reach 65% or above of the dry weight of the lucid ganoderma, and the purity of the extract is higher; in the preparation process, components such as ganoderma triterpenes, ganoderan, proteins, adenosine, mannitol, ergosterol, vitamins and amino acids are obtained through low-temperature wall breaking, fractional extraction and respective purification, and the preparation method hasthe characteristics of being simple, high in extraction rate and high in total product specific gravity.