Usually the causes of low pulse pressure are the following factors: 1, the age factor, middle-aged and young people will have low pulse pressure, while the elderly often have high pulse pressure. 2, low pulse pressure is usually related to poor living and eating habits. 3, congenital increased blood pressure, secondary renal artery stenosis, pheochromocytoma and other factors, can also cause low pulse pressure. If organic diseases are ruled out in young people, they usually need to lower and control the low pulse pressure in their lives, such as quitting smoking and alcohol, as well as low salt, low fat and low sugar diets, which can all play a role in improving the low pulse pressure.