Abstract: A number of methods have been used to evaluate results derived from the treatment project in mined out area though most of them is not certain with accurate and confirmed results at present. And there were no reliable code or regulation as well any criteria to follow in highway construction. In the paper, based on surveillances and instruments to evaluate the results of the treatment project using grouting in the typical mined out area beneath the highway in China, a system to evaluate results of the treatment is discussed and some criteria are proposed. Principle, methods and synthetic procedure for trying to test results of the treatment project in a mined out area were confirmed. Also, a results derived from the numerical analogy are discussed as a methods to evaluate results of the treatment project in the mined out area. It shows a picture for the further researches to evaluate results of the treatment project in the mined out area in future.