Urinalysis during pregnancy is mainly to check whether there is any urinary tract infection, to exclude the possibility of gestational hypertension, diabetes and other diseases. To see whether there is urine occult blood or white blood cells can understand whether there is a urinary tract infection, if there is a urinary tract infection or kidney stones can be detected from the urine routine within the white blood cells and red blood cells. If there is high blood pressure in pregnancy, it may cause kidney damage, which will lead to protein leakage from the urine, and then the urine routine is positive for urine protein. Positive urine ketone bodies can raise suspicion of metabolic disorders presenting as gestational diabetes, and further investigations are needed. Urine tubular pattern can also indicate potential kidney problems, and a positive urine cholagogue can also indicate liver problems.