Based on the analytic hierarchy process（AHP）

the expert survey method and fuzzy evaluation method

the risk source factors of strata collapse for aeolian sand tunnel are identified

and the three categories of risk source including engineering geology

hydrologic geology and construction design are proposed.Analyzing the specific weights of risk factors and evaluation set under all different risk sources

combining the specific characteristics of Shenmu No.1aeolian sand tunnel

the risk of surrounding rock collapse is evaluated.Research shows that:construction design is the main risk factor

which influences the aeolian sand ground collapse

and for the level 2risk factors under construction design factor

the advanced support type is a decisive condition

which decides whether the aeolian sand tunnel collapses or not.