The water resources in Qinghai-Tibet plateau are abundant, and shallow groundwater plays an important role in plateau hydrologic cycle. However, few studies had conducted on the responses of shallow groundwater level to global warming in this special region. Our research conducted on alpine meadow in the northeast corner of Qinghai-Tibet plateau, and applied dominance analysis to quantitatively evaluate the contributions of rainfall, wind speed, evaporation, 50 cm soil temperature and air temperature to groundwater level. The results showed that, (1) On a seasonal scale, the groundwater level was characterized by a double peak and double valley relationship within a year, which decreased significantly during the non-growth season (January to April, October to December) and increased during growth season (May to September), with the maximum and minimum value of groundwater level occurred in May (4.780.06) m and August (4.250.13) m, respectively. On a interannual scale, the groundwater level showed a show slightly downtrend from 2012 to 2016, with the highest value occurred in 2014 (4.180.27) m. (2) The wind speed was the most important factors affecting the variation of groundwater level among five environmental factors, which accounted for 36.8% of total variation, then followed by evaporation (27.7%), air temperature (16.6%), 50 cm soil temperature (9.5%). However, rainfall exerted little impact on the variation of groundwater level, which only accounted for 9.3% of total variation. Moreover, all environmental factors were significantly negative relate to groundwater level except rainfall. (3) The groundwater level was more stable than rainfall, and the variation of rainfall was larger than groundwater both on a seasonal scale and inter-annual scales. Our studies suggested that the shallow groundwater level would be less affected by rainfall on alpine meadow in Qinghai-Tibet plateau, which could provide scientific proofs to manage and utilize water resources in Qinghai-Tibet plateaus in future.