The slide fastener of the present invention comprises: a first fastener stringer in which a fixing pin is formed; a second fastener stringer in which an insert pin is formed; and a slider for coupling or decoupling the first and second fastener stringers, wherein when the insert pin and the fixing pin are coupled in the vertical direction, the second fastener stringer decoupled from the slider is positioned to enter into the slider. Accordingly, the second fastener stringer can be coupled conveniently, because the second fastener stringer decoupled from the slider is positioned to enter into the slider when the insert pint and the fixing pin are coupled in the vertical direction by means of first and second couplers.