Yellow urine during pregnancy can be caused by a variety of reasons. It may be caused by concentrated urine due to low water intake, or by urinary tract infections, jaundice, liver and other diseases, which need to be combined with other symptoms to clarify the cause in time. During pregnancy, if you drink less water, it can also lead to concentrated urine and yellow urine. If there are no other uncomfortable symptoms, it is normal; if the color of urine is yellow, accompanied by abnormalities such as yellow skin, yellow eyes and pain in the liver area, it suggests the possibility of liver disease or jaundice; if the color of urine is yellow, accompanied by frequent urination, urgent urination, painful urination and pain in the kidney area, the possibility of urinary tract infection should be considered. If the yellow urine during pregnancy is not accompanied by other abnormal symptoms, the yellow urine phenomenon can be improved by drinking more water; if it is accompanied by other abnormal symptoms, it is necessary to promptly visit relevant departments such as gastroenterology, urology, obstetrics and gynecology.