The abnormal activities of the western Pacific subtropical high(WPSH) are closely associated with other members of the Asian summer monsoon(ASM) system.By using the time-delayed correlation analysis method, the basic fact and physical characteristics how key members of the ASM system influence on the morphology and variation of WPSH are analyzed.And figures of the basic association structure and evolution are drawn.Results show that different subsystems of ASM system play different roles on WPSH:the abnormal intensity and position of WPSH are influenced by five key members of the Indian summer monsoon subsystem, while the abnormal west ridge point of WPSH is mainly caused by the five members of the East Asian summer monsoon subsystem.The results reveal the time-delayed characteristics and statistical correlation between WPSH and the key members of ASM system, which supply the basic fact for the future mechanism study.