The present article deals with the study on the evaluation method of soil resources based on the soil map of Guizhou province on the scale of 1:500,000 and supplementary soil surveys.The main poirns obtained in this study are sumarized as follows. 1. Firstly, the principles of soil resources evaluation should be decided according to the natural and economic characteristics of the district. Reasonable evaluation method which invol adoptation of suitable system, factors, criteria and procedure of evaluation should be consistent with the principle of evaluation.