Phenological data of three typical sand fixing plants(Nitraria tangutorum,Tamarix ramosissima and Haloxylon ammodendron)in the transitional zone between the Minqin Oasis and desert,and the corresponding meteorological data were both collected from the Minqin Desert Control Experimental Station in 1974- 2009,and reproductive phenology characteristics of three species to climate change was analyzed.The results showed that:(1)Annual average temperatures and annual humidity showed an increasing trend,annual average precipitation was fluctuated and varied in a small range annually,and annual evaporation has marked drop trends since 1990s.(2)Flowering period of the three species showed advance with the increasing of time,duration of flowering showed an increasing trend,but fruiting period of three species showed advance with the increasing of time,duration of flowering showed an increasing trend.(3)Reproductive phenology of the three species is not identical with annual rainfall,annual average temperatures,annual average humidity and accumulated temperature,accumulated temperature,accumulated humidity from the preceding of reproductive phenology.(4)Relation of flowering period with accumulated temperature,accumulated temperature, accumulated humidity is higher than annual rainfall,annual average temperatures,annual average humidity. Relation of fruiting period showed the same character with flowering period except accumulated humidity. Flowering period and fruiting period have a close relationship with meteorogical facters of phenological earlier, especially accumulated meteorogical index.