Abstract: The key stages subdivision of frozen soil wall evolution process, the deterministic analysis method of frozen soil wall overall properties for calculating frozen soil wall temperature field freezing front and characteristic isothermal coordinate are put forward, so as to study the wall weak parts, characteristics and the causes. Results show that the cross passage freezing pipe single side hole and the radius layout format create weak points in frozen wall thickness and average temperature in part of the frozen soil wall. The supporting frozen side wall thickness is larger than its design value, the average temperature is relatively low, while the main frozen side wall thickness is smaller than its design value and the average temperature is relatively high. The frozen wall in the freezing pipe crossing section under the cross passage pumping station bottom forms the latest, and the II frozen wall thickness is the smallest. The frozen wall closing time of the connection area between cross passage arch and side wall corner is the longest. Supporting frozen side wall freezing pipe with larger spacing has the thinnest frozen soil wall. When freezing construction method is applied, location and length design of temperature measuring holes should cover weak points, and the weak points should be emphatically monitored in the construction.