Abstract: There are four steps to evaluate the value of rangeland ecosystem services: definition, classification, setting up index, and evaluation. In this sequence, we discovered some different results in the four research steps. There could be three reasons for these differences: 1) Not fully understanding the heterogeneous characteristics of the grassland ecosystem interior, 2) Some research did not include the right evaluation objects, and these mistakes led to a double counting evaluation of the rangeland ecosystem services, and 3) Some research ignored the relationship between stakeholders and the valuation. To solve the above issues, a realistic plan of rangeland ecosystem services evaluation was introduced based on a comprehensive and sequential classification system of rangeland (CSCS). It included identification of the research scope and the internal grassland species, choosing the appropriate evaluation indices and the suitable evaluation methods. It especially emphasized the importance of field study.