Front wave structure and trousers

The utility model discloses a front wave structure and trousers. Comprising base cloth, an under fly is sewn on the surface of the base cloth, a zipper is sewn on the surface of the under fly, and the sewing line of the under fly does not exceed the tail end of the zipper; the zipper is arranged on the front part of the under fly, the tail part of the zipper is provided with a base cloth bartack, the base cloth bartack penetrates through the front part and the under fly, and an under fly bartack is arranged at a position which is a certain distance away from the bottom of the under fly and only penetrates through the under fly. The embedded clip of the front part of the jeans does not exceed the tail of the zipper, so that the thickness of the cloth at the part is not too large, the surface lappet is convenient to sew, and the white surface is flat and tidy after the surface lappet is sewed. The sewing line of the under fly does not exceed the zipper tail, so that the bottom of the under fly is not overlapped