The utility model relates to a tunnel construction technical field specifically is a tunnel longitudinal drainage blind pipe, and solved current tunnel longitudinal drainage blind pipe and the aversion has easily appeared, warp the problem of blockking up even at two lining concrete construction in -processs, including the tunnel encircle the foot position set up just spouting strut and two liningconcrete between drain pipe and sluicing fairlead, the both ends of the drain pipe sluicing fairlead of all having pegged graft, drain pipe are fixed through a plurality of drainage pipe support andare strutted just spouting, drain pipe upper portion is provided with the anti - filter plate of non -sand concrete, the anti - filter plate of non -sand concrete and drain pipe be outside turns overto wrap has the waterproof board, the sluicing fairlead runs through the setting in the pipe support is drawn in sluicing. The utility model discloses a bracket is fixed and non -sand concrete prefabricated, the mounting process, greatly reduced the installation calibration degree of difficulty of vertical blind pipe, make the control of being convenient for of vertical blind pipe construction quality, improved productivity at to a great extent, the utility model discloses social is good, has wide popularization application prospect.