Platelet volume usually refers to the blood routine in the average volume of platelets this indicator, only to see this indicator is usually high without clinical significance, if there is also a platelet count is elevated, it is suggestive of infection, hemolysis and other abnormalities. The average platelet volume indicates the average volume of individual platelets, and the normal value is within the range of 7~11fl. The normal value is within the range of 7~11fl. Exceeding this range is seen in the case of increased platelet destruction with good bone marrow compensation, or the recovery of hematopoietic function after hematopoietic inhibition is lifted. Usually, if only this index is abnormal, it may be a normal physiological phenomenon, which does not represent any problem. If it is accompanied by elevated platelet count, it suggests that there may be infections, blood loss, hemolysis, tumors and other diseases and symptoms, and it is recommended to consult a doctor for timely treatment.