Abstract: The present utility model discloses a double-layer anti-splitting slide fastener, comprising a left fastener tape, a right fastener tape, a left internal fastener element row and a left external fastener element row which are separately woven on surfaces inside and outside the left fastener tape by virtue of a left sewing thread, a right internal fastener element row and a right external fastener element row which are separately woven on surfaces inside and outside the right fastener tape by virtue of a right sewing thread, and a slider, wherein the left external fastener element row is locked to the right external fastener element row and the left internal fastener element row is locked to the right internal fastener element row; and, each of the left sewing thread and the right sewing thread comprises at least two ground threads and at least two surface threads, and each of the ground threads forms a hitch in coordination with at least one of the surface threads to form a chain stitch of the same number as