Tea-colored urine after strenuous exercise may be caused by body fluid loss, myoglobinuria, and too little water in the early stages. 1. body fluid loss: after exercise a lot of sweating, the loss of body fluids lead to urine concentration, reduce, at the same time, urine in the bladder storage time is too long, so that the urine further recycling, resulting in deepening the color of the urine, showing the color of tea. 2. Myoglobinuria: after strenuous exercise, part of the transverse striated muscle appears to be dissolved, part of the myoglobin is released from the muscle into the bloodstream, exceeding the kidney’s ability to reabsorb, resulting in patients with myoglobinuria, so that the urine is tea-colored. 3. too little water in the early stage: during the exercise process, due to too little water in the early stage, resulting in empty bladder, which may cause the mucous membrane of the bladder in the state of friction with each other, causing the mucous membrane congestion, part of the tiny blood vessels rupture, so that the urine is tea-colored. When the patient found that the urine is tea-colored after strenuous exercise, it is recommended to go to the hospital as soon as possible to do the relevant examination and active treatment, to avoid delaying the condition, resulting in deterioration.