Starting of the tunnel boring machine (TMB) is one of the key points which directly affect the effect of tunnel construction.The TBM started in the soft soil layers faces more difficulties and risks than those started other soil layers.Freezing on the starting end of TMB for consolidation is used during the construction of work-Nanjing Weisan road tunnel N crossing the Yangtze River and acquires a good effect.This text elaborates the design of freezing on the starting ends for consolidation,key construction points of such freezing technology and its construction effects.