The invention discloses a coal mine gate roadway temporary closing roadway support comprising a roadway hydraulic support body composed of a base, telescopic stand columns, a top beam and a link mechanism connected between the base and the top beam. A temporary closing device is arranged on the rear portion of the roadway hydraulic support body. The temporary closing device comprises a bottom support base hinged to the rear end of the base. A box body of an upper-portion-opened structure is arranged on the bottom support base. An up-down telescopic top plate driven by a power source, a left side telescopic vertical plate moving leftwards and rightwards and a right side telescopic vertical plate moving leftwards and rightwards are arranged in the box body. Openings matched with the longitudinal section shape of the left side telescopic vertical plate and the longitudinal section shape of the right side telescopic vertical plate are formed in the portions, corresponding to the positionsof the left side telescopic vertical plate and the right side telescopic vertical plate, on the left side wall and the right side wall of the box body correspondingly. The coal mine gate roadway temporary closing roadway support has the beneficial effects that the problem that existing manual closing wall forming is high in labor intensity and long in consumed time is solved and the advance speedof coal working faces is increased.