The phenomenon of frequent urination during the day and normal at night may be caused by physiological frequency of urination, neurological frequency of urination, as well as the cold environment. 1. Physiological frequency of urination: for example, drinking too much water during the day or eating water-rich food leads to excessive urination. At night, if you drink less water, you will urinate normally. 2. Neurogenic urinary frequency: excessive mental stress during the day, excessive tension can cause frequent urination symptoms, evening mental tension relief, frequent urination symptoms also reduce or disappear. 3. Cold environment: in the daytime in the cold environment can also trigger urinary frequency, and night environmental temperature rise urinary frequency relief. The symptoms of frequent urination during the day and normal at night may also be caused by other reasons, it is recommended to go to the regular hospital for treatment.