Abstract: A pop-up valve according to an embodiment of the present invention includes a head portion; and a foreign matter catching prevention device that is provided in a lower portion of the head portion, in which the foreign matter catching prevention device includes a body portion that is coupled to a bottom of the head portion; a protruding jaw that is formed radially in an outer circumference of the body portion and whose upper surface is in close contact with the head portion; and a first guide vane that extends downward from a bottom of the protruding jaw so as to be perpendicular to the protruding jaw and is located on one side of a second guide vane of a guide device which is coupled to an inside of a drain pipe.

Abstract: The washbasin pop-up valve according to an embodiment of the present invention comprises: a head part for opening/closing a drain; and a cover for foreign-substance sticking prevention, which has a width corresponding to the drain and extends downwards from the downside of the head part.