Abstract: Objective: To ensure construction safety and effectively control ground deformation, the reasonable pilot tunnel construction scheme for the shallowburied superlargespan metro tunnel excavation by multi guidinghole archcover method is studied. Method: By employing the method of numerical simulation combined with orthogonal experimental analysis, the effects of pilot tunnel excavation sequence, construction stagger and construction advance on the stress and deformation characteristics of the tunnelsurrounding rock system are investigated. Under the premises of accommodating the requirements of minimal impact on the surrounding construction environment and fulfilling the safety requirements of surrounding rocksupporting structure system under stress, the pilot tunnel excavation scheme is optimized. Result & Conclusion: Compared to conventional excavation methods, the ′sidefirst, middlelater′ and ′asymmetric excavation′ principles for guidinghole construction are more favorable for construction risk control and surrounding rock displacement control. Under the uppersoft lowerhard stratigraphical conditions, the construction parameters that significantly affect the mechanical effects of superlargespan tunnel by multi guidinghole archcover method are ranked in order of descending significance as follows: construction advance, excavation sequence, and construction stagger.