Some women often have the phenomenon of urinating less during the day and more frequently at night, which is usually normal and not a cause for concern, but there are other reasons for this symptom. It may be a problem with the urinary system, or it may be a normal physiological phenomenon, or it may be caused by insomnia causing mental tension. 1, the urinary system caused by. Because the body inflammation caused by the urinary system disease is easy to cause frequent night urination phenomenon, in addition to kidney disease patients, kidney function is not sound at night lying down, resulting in increased kidney burden, also easy to cause this symptom. 2, physiological factors lead to. As a result of drinking a lot of water during the day or at night, drinking some drinks, these water quality foods cause kidney movement at night, increasing the frequency of nocturia. 3, mental factors lead to. In addition to the above two reasons there is also a mental factor, which is mainly due to insomnia caused by mental tension, it is easy to lead to faster blood flow, so that the desire to urinate rises, resulting in the act of always urinating, in addition to the desire to urinate will also react on the mental, causing more serious insomnia and mental tension. These are the three main reasons why women have this problem, and patients need to find the correct influencing factors in order to treat it.