The present invention relates to an underwater foreign substance removal system and, more specifically, provides an underwater foreign substance removal system which performs removal work of an underwater foreign substance and simultaneously, sucks and collects the removed foreign substance. According to the present invention, the underwater foreign substance removal system comprises: a foreign substance suction member having a foreign substance suction body and a pressure air jet unit; a pressure air supply line wherein one end is connected to a pressure air supply source and the other end is accessed to the pressure air jet unit of the foreign substance suction member; a foreign substance discharge line accessed to a foreign substance discharge port of the foreign substance suction member to discharge a foreign substance to the outside; and a vacuum suction device accessed for negative pressure to be applied to the inside of the foreign substance discharge line.;COPYRIGHT KIPO 2016
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