Probiotics are bacteria that are beneficial to the body, and in a certain sense, probiotics are good for the spleen and stomach. First of all, it should be clear that the purpose of taking probiotics is to improve the intestinal flora, promote the change of intestinal function and regulate the spleen and stomach, which is a Chinese medicine saying, the meaning is to regulate the digestive tract. Probiotics are mainly suitable for people with chronic digestive tract diseases such as constipation and diarrhea or young children who have irregular bowel movements. Not everyone is suitable to eat probiotics. In addition, the impact of fresh food such as vegetables and fruits on the human digestive tract should not be ignored.