The present invention relates to a ceiling soundproof plate installation structure in a tunnel type soundproof wall and an installation method for the same. The present invention is to enable a soundproof plate to be simply connected when the soundproof plate is installed on a ceiling surface forming a tunnel. According to the present invention, the ceiling soundproof plate installation structure in the tunnel type soundproof wall comprises: multiple side pillars (100) installed at constant intervals in the longitudinal direction of a road and horizontally formed in a pair; a horizontal or arc type ceiling pillar (200) wherein both ends crossing the road are connected to the upper end of the side pillars facing each other; a guide member (300) wherein a middle line is fixed to the center of the ceiling pillar in an axial direction and a connection groove open in the longitudinal direction of the tunnel is formed on both sides; the soundproof plate (400) connected while enclosing a panel, which is formed in the shape of a plate and has a rectangular shape, and a frame of the panel by using a frame member; and a guide unit (500) enabling the soundproof plate to be connected by sliding and being guided when both ends of the soundproof plate (400) are inserted into the connection groove.;COPYRIGHT KIPO 2017
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