The utility model discloses a subway cable release tunnel, including the tunnel body, still include the pressure release hole, let out compressedair line, interval tunnel portals department is located in the pressure release hole, let out compressedair line and locate tunnel interval. The utility model provides a subway cable release tunnel adopts subway cable release tunnel pressure release hole air pressure control technique, and interval tunnel portals department is located in the pressure release hole, lets out compressedair line and locates tunnel interval, at pressure variation threshold value great grow up interval and interval portals, adopt to set up pressure release hole air pressure control technique, solve and change by the air pressure ripples, lead to the passenger tinnitus, pain, uncomfortable symptom such as dizzy to appear, both sides and top surface at interval changeover portion portals set up the pressure release hole, effectively reduce the influence of air pressure ripples and minute -pressure ripples, and construction process is simple, and the operation maintenance is convenient, satisfy passenger's travel demand. The wide application is in the tunnel field.