The constant urge to urinate in the 5th month of pregnancy may be caused by the pressure on the bladder due to the enlargement of the uterus or by a urinary tract infection that occurred during pregnancy. If it is due to pregnancy factors, no special treatment is needed; if it is a urinary tract infection, it is recommended that pregnant women go to the urology department of the hospital as soon as possible to identify the cause and take appropriate treatment according to the cause.1. Decrease in bladder volume: After pregnancy, the uterus will gradually become larger with the growing fetus, which will compress the bladder, making the bladder volume smaller and the effective capacity sharply reduced, leading to the situation of pregnant women wanting to urinate all the time. This is a normal physiological reaction of pregnant women during pregnancy and generally does not require special treatment. Usually, the symptoms of frequent urination will be relieved after the pregnancy is over. Pregnant women should try to pay attention to hygiene in daily life, often wash the vulva to prevent bacterial infection; 2, urinary tract infection: because the female urethra is short and straight, and after pregnancy due to changes in the body hormone level of pregnant women, resulting in increased secretions, so it is easy to occur pathogenic bacterial infection, which can lead to urinary tract infection, that is, 5 months pregnant always want to urinate, often accompanied by urinary urgency and pain, pregnant women to timely to The pregnant woman should go to the urology department of the hospital for routine urine examination. If a urinary tract infection is diagnosed, pregnant women are advised to drink more water, use appropriate antibiotics for anti-infection treatment under the guidance of a doctor if necessary, and pay attention to regular rechecking of urinary routine.