Abstract: With respect to the construction safety of tunnels with high geotemperature, this paper attempts to estab? lish an appropriate and effective evaluation system for a comprehensive evaluation. Firstly, it uses the DSR model to establish an evaluation index system of environment driving force - measurement state - measure response; Secondly,it determines the indicator weights by using the variable weight theory; Thirdly, it obtains the numerical eigenvalues of the integrated cloud model and generates the contours through the cloud model theory, and then determines the evaluation levels by combining the calculated maximum membership degrees; Finally, it applies this evaluation method to the engineering case for verification. The results obtained from the engineering case show that its safety state is slightly worse than medium, and the indicators leading to the decrease of the safety level are screened and picked out. The results show that the indicator system developed by the DSR model is comprehensive and relevant;the variable weight theory makes the indicator weights objective and realistic; the use of the cloud model dissolves the fuzzy and random characteristics of qualitative concepts in the evaluation process and makes the evaluation re? sults more reasonable and effective.