For making all pineapple Brandy,this paper studied the effect on output and quality of all Pineapple Brandy with different bacteria,sugar content,dilution of pineapple juice.The best results are from manual fermentation,blanching the pineapple,diluting the juice to 50%,and regulating the sugar content to 13.5%~15%.The shortage of aroma after skinning pineapple for ferment will be made up because of the plenty of aroma in pineapple fruit.