Objective:To discuss technological parameters of sugar permeability under vacuum of brown sugar ginger piece.Method:The preparation technics based on ginger and brown sugar,research the conditions of the vacuum degree,the time of infiltration,gradient,temperature,determines its content of total sugar and water.The result indicated:The best conditions of sugar permeability under vacuum is that the vacuum degree-0.09 MPa,the temperature 40 ℃,the sugar permeability gradient is 60% brown sugar first and then 90% brown sugar,the time is 6 h.The content of total sugar of brown sugar ginger piece of this technology is 65.22%,the content of water is 18.6%,and full,flexibility,shiny.