The invention discloses a hogskin suede vamp leather after-tanning wet finishing method which comprises the following steps: squeezing of hogskin vamp blue wet leather, primary shaving (flesh side), secondary light shaving (grain surface), wet milling, weighing, rewetting, water washing, retanning, water washing, neutralizing, water washing, primary greasing, filling, water washing, bulging, primary drying, secondary drying, remoistening, softening by vibration, dry milling, weighing, tempering, water washing, dyeing, secondary greasing, top dyeing, water washing, bulging, drying, remoistening, softening by throwing, (other steps), scaling, and warehousing. The finished product has the advantages of thin and short fuzz and no obvious pores, and is basically uniform; and the leather is plump and soft, has the advantages of high thickness, favorable fastness and high yield.