There are two types of yellow urine after exercise: 1, physiological factors, such as hot weather, patients can appear after exercise, urine less, urine yellow and other symptoms. Because of the hot weather, sweating too much, and drinking less water during exercise can lead to concentrated urine, thus causing the urine color to become yellow and less, indicating the performance of insufficient fluid in the body. 2, pathological factors, kidney disease should be ruled out, if the patient is accompanied by frequent urination, urinary urgency, painful urination, yellow urine, you need to do a routine urine examination to see if there is a urinary tract infection. Routine blood, urine, creatinine and urea nitrogen measurements should also be done to see if there are any causes of kidney disease. Sometimes liver and gallbladder diseases can also cause yellow urine, which needs to be determined by liver function and abdominal ultrasound.