The invention relates to an evaluation method for an understory environment applicable to planting of pseudo-ginseng, belonging to the field of crop cultivation. According to the invention, a forest plant generates a mutual generation or constraining effect to foreign plants mainly through root exudates, volatile matters and understory special soil microorganisms to affect the understory growth ofplant populations. Thus, the invention provides a method for rapidly evaluating whether released allelopathic substances and formed special soil by different tree species are applicable to the growthof the pseudo-ginseng or not, and for determining whether forest vegetation is applicable to planting of the pseudo-ginseng or not through rapid analysis of influence of volatile matters, leaching matters, understory special soil microorganisms and abiotic factors on the growth of the pseudo-ginseng; and the invention also provides a judgment method for influence on the growth of the pseudo-ginseng. The method provided by the invention only needs three months to complete the whole process of evaluation, so the forest vegetation applicable to planting of the pseudo-ginseng can be rapidly selected.