There were various accidents likely to occur when shield tunnel launching in high water head and slit strata. Surface grouting, freezing and other methods were often used to pre-reinforce the initial strata in Shield Launching Hole. Combined with strata characteristics in tunnel of Wangjiang road, this paper put forward a combined reinforcement of triaxial mixing pile, high pressure jet grouting pile as well as local freezing. This paper introduced the determination principle of reinforcement parameters and effect evaluation. Field test showed that all the conditions meet the design requirements. Tunnel launched successfully and it can be a reference for similar projects.