Abstract: Based on the daily observation data of summer precipitation in the Zoige ecological zone and monthly NCEP/NCAR reanalysis dataset, the interannual variation of summer precipitation in Zoige from 1979 to 2020 and its relationship with convective anomalies in the Western Maritime Continent (WMC) were studied. The results show that: (1) The summer precipitation in Zoige has obvious inter-annual variability, with 4-6a cycle in the mid-to-late 1990s and quasi 2a cycle in the late 1990s and early 2010s. (2) On the interannual time scale, there is a close relationship between the intensity of convection over WMC and the amount of summer precipitation in Zoige. When the convection over WMC is stronger (weaker), the summer precipitation in Zoige is more (less). (3) When the convection over WMC is stronger, the corresponding western Pacific subtropical high is significantly westward-shifted and intensified, the meridional circulation in the mid-high latitudes of Eurasia is stronger. The low-level wind field shows an anticyclonic circulation anomaly from southern China to the northwestern Pacific. There is an anomalous southwesterly wind from the northern Bay of Bengal to the southern Tibetan Plateau. These conditions are favorable for the transport of the warm and humid airflow from the northwestern Pacific and Indian Ocean to the Zoige ecological zone, resulting in more precipitation, and vice versa.