There are mainly the following reasons for yellow urine in early pregnancy: 1, may be dehydrated, because the body is dehydrated, urine will be concentrated, so the color will be heavier and appear yellow, so usually need to drink more water. 2, may be food factors, eat a lot of papaya, carrots and other foods may also lead to yellow urine, usually stop eating these foods, drink more water, the color of urine will return to normal. 3, eat a lot of vitamin B12 content of food, such as pork, chicken, beef, animal offal, etc., if you usually eat too much, it may lead to yellow urine. In addition, usually taking vitamin B12 supplements can also lead to yellow urine, generally stop taking it and the color of urine will return to normal. 4, urinary tract infection, urinary tract infection can also lead to yellow urine, you need to go to the hospital to do routine urine examination to confirm the diagnosis, and then comprehensive treatment, usually also drink more water, more flushing of the urinary tract. In addition, also pay attention to the hygiene of the perineum area. 5, fire, fire will also lead to yellow urine, because the fire will lead to rapid evaporation of water in the body, so it will lead to yellow urine. You need to drink more water, maintain good habits and ensure sufficient sleep, the symptoms of fire will be relieved and the color of urine will gradually return to normal.