Plate corrugated structured packing with edge pit structure

The utility model discloses plate corrugated structured packing with an edge pit structure. The plate corrugated structured packing is disc-like packing mainly formed by splicing packing sheets; a pit area with a pit structure is respectively arranged in a contact area between two adjacent packing discs; other areas on the packing sheets forming each packing disc are subjected to surface embossing treatment to form gas and liquid channels for enabling mutual gas-liquid contact to transfer heat and mass in the packing main body; the pit areas on respective sides of the two adjacent packing discs in the contact area have the same or different width which does not exceed a quarter of the width of the original packing sheet; the grains on the two adjacent packing sheets of the two adjacent packing discs are oppositely arranged, and numerous gas-liquid channels are formed in the packing discs; and a fixing sealing ring is additionally arranged outside each packing disc. The plate corrugated structured packing disc