Abstarct: Empirical methods are very useful methods for the initial design of underground space. At the design stage, these methods require little data and provide a good estimate of the rock mass as well as the selection of the support system according to the pressure applied to the supporting. Considering the use of underground structures in the process of designing underground structures is very necessary. The important point in using empirical methods is to pay attention to the origin of these methods and their generality, in order to increase the accuracy of the estimates, these methods are used in the right place. The Q* method is a new empirical method baxsed on Q method, which has been used well in Canadian mining. Since little studies have been done on this method and it seems that the accuracy of a better estimation of the mass quality is presented, it is necessary to analyze this method. In this research, in addition to the full introduction of this method, it has been tried to analyze and investigate this method in various aspects. To do this, after calculating the data on the data obtained from the access tunnels of horizons 2110 and 2240, tunnels of K12 tunnel of the Taareh mine and the design of the maintenance system baxsed on the Q* method of design steps and the approach of this method in the evaluation of rock mass and maintenance selection And the effect of different parameters in the design process was analyzed and evaluated. In order to compare the Q* method with previous methods, this method was compared with the Q method that has been successfully used all over the world for years. Also, in order to study the maintenance system proposed in this method, numerical modeling was used by UDEC software and Mohr Coulomb's failure criterion. After examining the model and output results of the software, the displacement values were investigated. The results showed that, with proper accuracy in determining the initial data, the Q* method could have an acceptable accuracy in estimating the rock mass and selecting a maintenance method for small tunnel minerals. Finally, because Q* method has been used from new support systems such as Thin Spray-on Lining (TSL), part of this study is to study the properties of this support system.