Abstract: Objective: In order to explore the effect of blasting vibration in subway protection zone on the existing tunnel structure, and summarize the response law of blasting vibration, it is necessary to study the dynamic response law of existing subway tunnel lining structure to blasting seismic wave. Method: Based on a specific case of blasting construction in the protection zone of a subway excavation project in Qingdao, ANSYS/LS\|DYNA software is used to establish a dynamic numerical calculation model. The calculation parameters and explosive parameters of the model are set, together with four different working conditions based on different values of the radial distance between the blast center and the tunnel lining structure, and the angles of blasting. The vibration speed, frequency response characteristics, and stress response of the tunnel lining structure under each working condition are analyzed for circumferential and longitudinal distribution patterns. The validity of the simulation numerical results is verified by comparing them with on\|site measured data. Result &Conclusion: The peak vibration velocity occurs in the lining structure closest to the blasting center. The maximum and minimum vibration velocities are generally distributed diagonally. The vibration velocity is highest on the blasting face of the tunnel and lowest on the back blasting face. The larger number of explosives, the greater the attenuation of vibration velocity from the blasting face to the back blasting face. The stress field of the tunnel lining structure undergoes dynamic changes, with the tensile stress value of the back blasting face being approximately 40% to 50% that of the blasting face and exhibiting a pattern of decreasing towards both sides from the point of minimum blast distance. Blast vibration monitoring points should be arranged closest to the blasting center and their locations should be altered promptly with changes in the blasting direction. Under the blast vibration control index of 1.0 cm/s, the possibility of additional stress generated by blasting causing damage to the lining structure is low.