Frequent visits to the toilet at 37 weeks of pregnancy are mostly due to the enlargement of the uterus and the pressure on the bladder and rectum, which is a normal phenomenon. In late pregnancy, the uterus will increase significantly, and at full term the uterus increases nearly 1000 times, the bladder located in front of the uterus will be compressed, resulting in a reduction in the volume of the bladder, once there is some urine in the bladder, it needs to be discharged in a timely manner; the rectum is compressed will produce the feeling of wanting to defecate frequently. Frequent toilet visits at 37 weeks of pregnancy are also seen in the following cases: 1. Physiological hydronephrosis: In late pregnancy, some pregnant women may develop physiological hydronephrosis, which is the cause of more frequent urination. It is recommended that pregnant women take the middle urine for routine urinalysis and pay attention to whether the white blood cells and red blood cells in the urine are increased. If it is increased, consider that it may be urinary system infection, follow the medical advice to treat it; if there is no abnormality, it can generally be relieved by itself; 2, chronic nephritis: some pregnant women have chronic nephritis before pregnancy, which will also lead to more frequent when going to the toilet in 37 weeks of pregnancy, for this part of patients, it is recommended to go to the nephrology department for examination and treatment in a timely manner, and actively treat the original disease. During pregnancy, it is recommended that pregnant women should drink more water and urinate more often, because the blood of pregnant women is in a state of high coagulation, especially at 37 weeks, which is prone to the formation of thrombosis-like diseases. Therefore, don’t stay in bed for a long time and move your lower limbs properly to reduce the occurrence of thrombosis. However, do not drink too much water before going to bed to avoid frequent toilet visits at night, which may affect the quality of sleep and lead to headache and dizziness.