3-5 or so.

For normal adults, generally eat about 3-5 plums a day, plums are rich in vitamins, fruit acids, fiber and a variety of mineral components, moderate consumption can be removed from the thirst, appetizers, beauty and laxative effect. But plums are warm fruits, and contains a lot of organic acid components, too much consumption is easy to trigger fire, and will also be easy to cause gastrointestinal discomfort.