A new grouting method and its technology were provided to achieve the goal of pouring the longitudinal crack in-depth.First,the cement mortar mix design which can satisfy the requirement of pouring the longitudinal crack in-depth was investigated,and then,the grouting technology including grouting timing,pretreatment,pore drilling and arrangement,sealing tube embedment,grouting and preserving was determined by sealing the crack in situ on the test road.The result indicates that the cement mortar has good fluidity and early strength,the method can pour the cement mortar into base or even into subgrade to recovery the construction and strength of pavement,which means that the new method can cure the longitudinal crack of asphalt pavement caused by asymmetric sedimentation thoroughly.