If a pregnant woman has yellow urine, first of all, we should exclude whether the intake is insufficient, if the pregnant woman has less water, the urine will be concentrated and yellowish, after excluding this situation, we should consider whether the pregnant woman has a condition of liver function or an increase in bilirubin. If a pregnant woman has combined hepatitis or poor liver function, there will be changes in transaminases and changes in bilirubin, and at this time there will be obvious yellowing of the urine or yellowing of the face or skin, if these will occur, the pregnant woman needs to go to the hospital for a checkup to check the liver function and exclude abnormalities in liver function. If the urine is yellow, you need to rule out the presence of cholestasis syndrome during pregnancy, which can also show changes in transaminases and changes in bile acids, with itching of the skin.