Abstract: From the angle of climatology, the tropical cyclones (TCs) data from the American Joint Typhoon Waring Center (JTWC) and wind and height reanalysis data from NCEP /NCAR were used to discuss the modulation of typhoon tracks over the Western North Pacific by the atmospheric quasi-biweekly oscillation (QBWO) in the summer (June through October) for the nearly 32 years. The original circulation, low-frequency circulation, and the evolution of low-frequency circulation in the period of the atmospheric QBWO were analyze by themethods of composite analysis. The results showed that the atmospheric have the characteristics of QBWO; the atmospheric QBWO affects the intensity and position of monsoon trough and subtropical high pressure by the lowfrequency cyclone and low-frequency anticyclone, thus affects the formed location and movement of typhoon tracks; the low-frequency cyclone east of the Philippines is a more conducive condition for the formation of typhoons, the positive vorticity zone of low-frequency cyclone affects the movement of typhoon; additionally, the atmospheric QBWO eastward propagation in the subtropics also affects the typhoon tracks. The interaction of tropical and subtropical QBWO plays an important role for the typhoon tracking.