Based on the NCEP/NCAR reanalysis and observation precipitation data, the concurrent variation feature of the East Asian subtropical jet and polar front jet, as well as its association with the precipitation in winter over South China, were examined. It was found that the simultaneous reverse concurrent variation between the East Asian plateau jet and polar front jet was the most remarkable in winter. There exist two types of variation:the plateau jet was strong while the polar front jet was weak(SW), and the plateau jet was weak while the polar front jet was strong(WS). When the plateau jet was intensified(weakened) while the polar jet was weakened(intensified), the precipitation over South China was increased(decreased) significantly. Composite analysis results show that the reverse concurrent variation between the plateau jet and the polar front jet can reflect the activity features of cold and warm air associated with precipitation in winter, leading to the different precipitation pattern over South China.