Abstract: In order to perfect the theoretical system of freezing rock, the calculation method of freezing wall thickness and the analysis method of bedrock freezing wall formation were studied. The concluded that the deep water-bearing bedrock could be used in the formula and the strength of the ground pressure and permafrost C ould be optimized, based on the similarities and differences of these properties in the alluvial layer in the deep freezing of soft rock. The freezing wall design method wa s used to analyze the freezing wall in the process of freezing design. In the process of freezing design, the comprehensive analysis method of freezing wall formation C haracteristics was used to analyze and forecast the freezing and thawing design, and the corresponding freezing and monitoring and control measures were developed and used in the freezing process. Focusing on the freezing of salt water temperature, the flow of effective monitoring and control, to achieve the safe and rapid construc tion of the frozen project.