Constipation is not an isolated cause, irregular life can easily cause constipation, diet does not pay attention to constipation, work pressure, poor mental state, insomnia, high blood pressure, etc. can easily lead to constipation, and some antihypertensive drugs may also cause abnormal function of the intestinal smooth muscle and thus lead to constipation, and the most critical problem is the poor voluntary peristalsis of the intestines, and the lack of plant fiber in the diet. A proper diet structure can prevent and treat constipation. If there is too little fiber in the food, it cannot produce effective stimulation of the gastrointestinal tract, and the gastrocolonic reflex is weakened and the intestinal pressure is insufficient, it will lead to constipation. Conversely, too little fat intake, can also cause constipation. The reason is that the elderly physical activity is reduced or long-term bed, intestinal peristalsis slow, so that the stool in the intestinal cavity for too long, most of the water contained in the intestinal mucosa reabsorption, resulting in dry stool difficult to discharge. Therefore, the association between constipation and hypertension medication in the elderly is not very large, and even if the antihypertensive medication causes constipation, the benefits it brings to hypertensive patients are negligible compared to the benefits it brings, and can be ignored. At this time, it can be combined with drugs such as aloe vera capsules. Meanwhile, fat can lubricate the stool, fatty acids can stimulate intestinal peristalsis to speed up, pecans, turtle meat, pork intestine, sesame oil, etc. have this effect and can be consumed appropriately. In addition, in order to prevent and treat constipation, we also need to pay attention to correct the bad habit of sitting in the toilet to read newspapers and think about problems, and eat less hot and dry products such as chili and mustard, and especially emphasize not to overeat.