The present invention relates to an assembly type soundproof unit. According to an embodiment of the present invention, an assembly type soundproof unit comprises: a body having a cylindrical shape in which a predetermined space is formed, and having an outlet in a vertical direction on an outer circumferential surface; a winding machine placed in the body, and having a rotating shaft which can be rotated and an elastic member provided in the rotating shaft to elastically restore rotation of the rotating shaft; and a sound absorbing sheet of which one end is fixedly wound in the rotating shaft, and the other end is inserted into and drawn out of the outlet of the body.;COPYRIGHT KIPO 2017
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