Disclosed is a grating station-type simple excellent filtration device. The device of the present invention comprises: a grating having an entrance introducing plate curved at a fixed angle toward a water collection container on the bottom; a plurality of wires; a water collection container coupled to a lower end unit of the grating by the plurality of wires, and equipped with a filtration net formed with a plurality of penetration holes on inner one side; and a filter medium layer having a drainage plate formed with the plurality of penetration holes on one side and having a filter medium filled inside, attached to the bottom unit of the water collection container.;COPYRIGHT KIPO 2017
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