The utility model provides an inter -city railway tunnel shaft formula emergency exit structural system. Including setting up the perpendicular shaft in the tunnel, tunnel longitudinal arrangement interval in shaft edge is no longer than 5km, and is high no longer than 30m, rectangle or circular section, set up various signs in the perpendicular shaft, including stairwell and guard gate, the minimum current width of its stair is not less than 0.8m, installation jet fan in the shaft to the wind speed of guaranteeing guard gate department is not less than 1.5ms. The utility model has the advantages of simple structure, to the floor outlet require lower, the cross -section is little, length is short, do not occupy land resource, accord with relevant standard, rectangle or circular section do benefit to the construction and accord with stair arranges the requirement, the stair width meets the requirements, the guard gate possesses the effect of resisting train piston wind pressure simultaneously, jet fan can prevent smog, the three control model can guarantee that the fan in time starts under emergency, the system can guarantee sparse safety, save tunnel construction and operation maintenance cost.