Greenhouse gas flux from alpine grassland has been one of hotspots to study the relationship between climate change and alpine grassland. Most of these studies focused on gas flux of one type grassland and differences in gas flux among different alpine meadows receives little attention. A experiment was conducted in three types of grassland,ie. alpine meadow,artificial pasture and shrub meadow to investigate the Greenhouse gas fluxes in three types of grassland by using static chambers and gas chromatography. This study indicated that three types of alpine grassland were the sink of atmospheric CH_4, and were the source of atmospheric CO_2 and N_2O. CH_4 flux rates were -21.4,-28.1 and -41.1 mug ·m~(-2)·h~(-1) for FC,FCP and GG. CO_2 flux rates were 360.6,447.9 and 475.1 mg·m~(-2)·h~(-1) for FC,FCP and GG. N_2O flux rates were 34.2,51.6 and 50.6 mug·m~(-2)·h~(-1) for FC,FCP and GG. CH_4, CO_2 and N_2O flux in growing season accounted for 42.4% ~ 45.6%,64.1% ~ 67.8% and 37.9% ~ 66.7% of the whole year,respectively. Soil temperature at 5 cm depth negatively correlated with CH_4 flux rate (P<0.01) and positively correlated with CO_2 and N_2O flux rate (P<0.01). Soil moisture positively correlated with CO_2 and CH_4 flux rate,negatively correlated with N_2O flux rate. Q_(10) revealed that CO_2 flux rate was more sensitive to increase in temperature than CH_4 and N_2O flux rate. The three grasslands for controlling greenhouse effect were in the following order: GG>FCP>FC. The CO_2 flux rate was much higher than CH_4 and N_2O flux rate,then contributing an important role to greenhouse effect of grassland.