The main reasons for the increase in blood pressure in late pregnancy include the following: 1, in the late pregnancy hormone level changes, the placenta secretion of estrogen easily affects pregnant women resulting in blood pressure spasms, resulting in the acceleration of blood circulation will also lead to increased blood pressure; 2, due to genetic factors lead to increased blood pressure; 3, and diet is also inevitably linked, in late pregnancy often eat too greasy food or heavy taste, eat The phenomenon of increased blood pressure can also occur; 4, too much mental stress can also lead to increased blood pressure. There are various reasons for the increase in blood pressure, so you should pay attention to maintenance, proper diet control, moderate exercise, pay attention to rest, and do a low-salt, low-fat diet, and use antihypertensive drugs to control blood pressure in time when it is too high.