Tree growth/climate relationship was analyzed by the application of tree-ring-width proxy of Tibetan junipers (S. tibetica) at the Namlin Region. The results showed that annual precipitation was the controlling factor for radial growth at the study sites. Based on a linear regression model (the explained variance accounted for 45.94%), an annual (from July of the previous year to June of the next) precipitation series from 1485 to 2010 were reconstructed and the reconstruction displayed remarkable climatic rhythms in decade scales for the Namlin precipitation series: relatively wet periods above the average occurred in 1490-1510, 1530-1550, 1620-1640, 1680-1720, 1740-1750, 1840-1850, 1880-1910, and 1960-1990 whereas relatively dry periods prevailed dur-ing 1520s, 1560-1610, 1650-1670, 1730, 1760-1830, 1860-1970, 1920-1950 and after 1990. Compared with Linzhou and the regional precipitation on the Southern Tibetan Plateau, both the dry and wet intervals contem-poraneously occurred in the decadal scales during the last 500 years, implying that the regional climate might be influenced by the similar climate dynamics.