The main purpose of collecting urine from pregnant women is to conduct examinations to determine whether there is any possibility of gestational hypertension or urinary tract infection. 1. Gestational hypertension: If a pregnant woman develops elevated blood pressure after mid to late pregnancy, combined with urinary protein, then it is considered that the pregnant woman is suffering from gestational hypertension. This situation is likely to lead to placental abruption, fetal intrauterine distress, and even the life of the pregnant woman may be in danger. Therefore, pregnant women with gestational hypertension need to pay attention to regular routine urine examination, according to the urine protein condition to determine the severity of the disease. 2. Urinary tract infection: pregnant women during pregnancy due to decreased body resistance, if usually do not pay attention to maintain perineal hygiene, it is easy to lead to bacterial infection, triggering the possibility of urinary tract infection, through the urine examination can be found elevated white blood cells. Pregnant women during pregnancy must pay attention to the regular maternity examination, at any time to find the problem at any time to deal with.