Rhabdomyolysis creatine kinase can be significantly elevated, often more than five times above the upper limit of normal. Creatine kinase is also known as creatine phosphokinase. It is mainly found in skeletal muscle, cardiac muscle and smooth muscle. It is directly related to the operation of intracellular energy and muscle contraction. Its normal reference value range is 18.0 to 198.0 U/L. Rhabdomyolysis is a symptom caused by the release of intracellular substances into the blood after the destruction of rhabdomyocytes due to various reasons. The classic symptoms are the “triad” of myalgia, muscle weakness, and strong tea-colored urine. The most important laboratory test is the measurement of creatine kinase levels, for which there is no clear cut-off value, and which is usually greater than five times the upper limit of normal. After exercise, muscle weakness, urine color change, general weakness, etc., must go to the hospital, by professional doctors according to the results of the examination, give standardized diagnosis and treatment.