Excessive urination in pregnant women can manifest as an increase in the number of urinations alone, or as an increase in both the number and volume of urinations. The possible causes are not exactly the same due to the time of occurrence and the specific clinical manifestations. In early pregnancy, the symptoms of increased urination and low urine volume are due to the pressure of the enlarged uterus stimulating the bladder and causing a physiological reaction, which is a normal manifestation of early pregnancy, and the symptoms are often relieved after the uterus grows out of the pelvis. The increased frequency of urination that occurs in late pregnancy or before delivery is due to the pressure on the bladder and increased pressure on the bladder and urethra after the fetal previa is in the pelvis, and some pregnant women may experience frequent urination and urinary incontinence. If the increase in urination occurs in the middle and late stages of pregnancy and is accompanied by a significant increase in the volume of urine, you should be highly alert to the possibility of gestational diabetes. Patients need to visit the hospital and undergo a standard glucose tolerance test to further clarify the diagnosis, and a glucose tolerance test should be performed to screen for gestational diabetes during the 24-28 weeks of gestation maternity checkup.