The heart rate becomes very fast after having a bowel movement, there are physiological and pathological reasons, pathological such as constipation, coronary heart disease, hypertrophic obstructive cardiomyopathy, etc., constipation can be taken to take Ma Ren Lunji Pills, etc., coronary heart disease can be contained in the nitroglycerin, etc., to relieve, hypertrophic obstructive cardiomyopathy, mild symptoms of the selection of drugs beta-blockers such as metoprolol and other drug therapy, severe symptoms may require surgery or interventional ablation therapy. 1. Physiological: Normal adult heart rate can also become fast, is a common tachycardia, and sympathetic excitation and vagal tone is lowered in relation to the exercise, anxiety, emotional excitement, such as before the bowel movement, these conditions may lead to fast heart rate, usually after resting to ease the relief can be relieved. 2. Pathologic, as follows. (1) constipation: difficult to defecate may lead to panic and chest tightness and other symptoms, usually after defecation can be restored, usually develop good defecation habits, drink more water and proper exercise, eat more crude fiber food and fruits, etc., can be relieved with medicines such as Ma Ren Lun Bowel Pills. (2) coronary heart disease: when the heart rate accelerated after defecation for a long time does not relieve, consider other causes such as coronary heart disease, due to coronary atherosclerosis and lead to myocardial ischemia and hypoxia affects the contraction of the ventricle, resulting in accelerated heart rate, you can use nitroglycerin and other drugs to treat. (3) hypertrophic obstructive cardiomyopathy: these patients can also appear fast heart rate, the most common is atrial fibrillation, there is no cure, more symptomatic treatment, such as the use of β-blockers, such as metoprolol, etc. to control the heart rate, the symptoms of the seriousness of the need for surgical treatment or interventional ablation to reduce the symptoms and improve the survival rate. It is recommended to go to a regular hospital, after the cause of the disease is clear, choose the appropriate drug treatment, the above drugs should not be used privately in order to avoid causing adverse effects.