The phenomenon of frequent urination during pregnancy may be caused by drinking too much water, which is a normal physiological phenomenon. In addition, hormonal changes in the body during pregnancy, or because of fetal pressure on the bladder can also cause frequent urination, urinate more often, do not need to worry too much, usually after the end of pregnancy can be relieved. In addition, it may also be an inflammatory stimulus caused by increased urination. First, physiological factors 1, hormonal changes during pregnancy will make the pelvic congestion, increased blood flow to the bladder caused by frequent urination, due to increased urination, it feels like urinating more, but the actual total volume of urine may not have a significant increase; 2, with the development of the fetus uterus gradually increase in size, the position of the abdominal organs change, pressure on the bladder, so even if there is a very small volume of urine will produce the urge to urinate, causing frequent urination. For example, in early pregnancy, the enlarged uterus will compress the bladder, after 12 weeks of pregnancy, the uterus enlarges more than the pelvis, the symptoms of bladder compression will disappear; 3, late pregnancy because the head of the fetus began to fall until the pelvis, the bladder is squeezed by the degree of the larger, urination will be more frequent, feel the urinary more, but in general, the total amount of urine will not have a very significant increase. Second, pathological factors When the urinary tract is bacterial infection triggered by inflammation, can be manifested as frequent urination, urinary urgency, urination. There are also gestational diabetes mellitus can also be manifested in such symptoms. Therefore, the frequency of urination during pregnancy, urination should be timely to confirm whether physiological factors or pathological factors lead to, usually is a normal physiological phenomenon, do not need to be over-anxious, to calm the mind, the correct treatment of their own changes during pregnancy. It can be improved by drinking less water before going to bed, and at the same time pay attention to the regulation of abnormal psychology, but also under the guidance of professionals to exercise, increase the strength of the pelvic muscles, control urination, and reduce the occurrence of urinary incontinence. Once it is recognized as a pathological factor, it is necessary to seek medical treatment in time.