Constipation in menstruation can start with good dietary adjustments, and if necessary, you can take medication, such as lactulose, bifidobacteria and so on. 1. Dietary adjustments: Eat more fiber-rich foods in your diet, such as oats, apples, bananas, broccoli and so on. Drink plenty of water to ensure that there is sufficient water intake. In addition, develop a regular bowel habit, avoid squatting for a long time. Appropriate physical activities, such as jogging, cycling and so on. 2. Laxative drugs: If the effect of dietary adjustments is not good, you can follow the doctor’s instructions to take medications, such as laxatives (e.g. lactulose), microecological agents (e.g. bifidobacteria) and so on, which can relieve constipation. However, it should be noted that the use of drugs must be under the guidance of the doctor, do not blindly self-medication.