Frequent urination during pregnancy can be caused by physiological factors, but also by urological diseases, gestational diabetes and other diseases. 1. Physiological factors: such as drinking too much water, the enlarged uterus pressure on the bladder, etc., can trigger excessive and frequent urination during pregnancy, and generally can be relieved by controlling the amount of water consumed, and do not require special treatment. 2. Urological diseases: such as urethritis, cystitis, pyelonephritis, etc., the patient may also be accompanied by urinary pain, perineal pain, lumbar pain, fever, fatigue and other discomforts. 3. Gestational diabetes mellitus: polyuria and frequent urination are the common symptoms of this patient, the patient’s blood sugar is abnormally high, and may be accompanied by excessive food, dry mouth, drinking and other discomforts, and may also induce miscarriage, preterm labor, and even the death of the fetus. Pregnant women with symptoms of excessive and frequent urination, which cannot be relieved by controlling the amount of water consumed, or when accompanied by other discomforts, should consult a doctor in a timely manner to identify the cause of the disease and carry out treatment under the guidance of the doctor, and should not make blind judgments on their own, so as not to affect the condition.