As soon as you lie down at noon to urinate frequently at night is normal, then the possible reasons: First: before the nap if you drink a lot of water, or use a food containing more sugar, or use a drink with a high sugar content, there will be frequent urination. Because after eating there will be a transient increase in urine sugar levels, and blood sugar levels, which will produce an osmotic diuretic effect. At the same time, because a large amount of water is taken before bedtime, resulting in enhanced filtration of the kidneys, there will be an increase in the frequency of urination. Second: further urine examination is needed to rule out the presence of chronic infection of the urinary tract. When chronic infection occurs, it is not like acute infection, which causes strong symptoms of urinary irritation. It will only cause phenomena such as atrophy of the mucosa of the urinary tract and chronic irritation resulting in frequent urination. Usually after lying down, the amount of blood returned to the heart and kidneys increases filtration enhancement, so the frequency of urination is obvious. A urine culture test and routine urine examination are required to further confirm the diagnosis. If there is a chronic infection in the urinary tract, anti-infective medication should be given to reduce the symptoms.