For general healthy people or elderly people, the following methods can be used: 1.Take bifidobacteria preparation (such as Pepcid) 1~2 times a day, 2~4 capsules each time. 2.Take 1～2 times a day of 1.5 grams of water sugars, or 1～2 times of 3～4 grams of oligolactose. The above two are methods to improve the intestinal bacterial flora without side effects. For patients with mild habitual constipation, the following methods can be used: 1. Take bifidobacterium preparations (such as Pepcid) 2 times a day, 2 to 4 capsules each time 2. Or take hydrosulose 2 times a day, 1.5 grams each time, or oligolactose 2 times a day, 4 grams each time. For patients with moderate or severe habitual constipation, the following methods can be adopted: 1. Take 4 capsules of Bifidobacterium bifidum preparation (such as Pepcid) each time, and add 1.5 grams of water sugars or 4 grams of oligolactose. 2, bifidobacteria preparations serving method is pefikon 4 capsules each time, 1 to 2 times a day 3, there are moderate to severe constipation patients can also choose oats, wheat bran, apples, bananas and other good food fiber in the food, but also conducive to the relief of constipation symptoms. (If necessary, take good food fiber tablets 2 to 3 times a day, 2 to 3 tablets each time, chewed and swallowed and drink a lot of water) The above preparations, moderate habitual constipation people take 1 time, the cost of severe people 2 times. In addition, moderate exercise is beneficial to restore intestinal peristalsis, enhance the secretion of body enzymes, and promote food digestion and absorption.