Abstract
We observed the remarkable thrombocytosis in a patient suffering from severe asthmatic attack. The number of platelets decrease gradually along with the improvement of the symptome Thromboelastogram showed the accelation of coagulation and thrombocytosis. However thrombocyte function was normal judging from the result of coagulation function test. Furthermore, we aloso observed the number of the platelets in the patients suffering from astmatic attack was significantly higher than that of healthy children, suggesting the involvement of platelets in asthmatic attack as a inflamation.