疏散星团蓝离散星的形成和演化是恒星物理学中重要但未解决的问题。它们具有特殊的形成机制、涉及很多复杂的双星演化过程以及星团动力学演化过程、会显著的影响不可分辨星团积分光谱，导致星团年龄和金属丰度的低估。疏散星团蓝离散食双星能够探讨蓝离散星的形成和演化。利用50BiN中国节点(西华师大天文台50厘米双筒望远镜)对一批疏散星团开展长时间基线的时序测光观测,得到完备的疏散星团蓝离散食双星样本，确定其基本物理参数（质量、半径等）以及其它观测特征，探讨其形成机制以及演化。最后，对散星团蓝离散食双星的观测特征、形成机制、演化结局等进行大样本统计研究，确定其主导形成机制以及其它机制的贡献，为疏散星团蓝离散星的形成机制和演化理论的进一步发展提供一些新的观测依据以及暗示。同时，本项目也能促进西华师大实测天体物理学科的发展。

Formation and evolution of blue stragglers in open clusters is an important but unresolved problem in stellar physics, which has special formation mechanism and involves in many complicated physical processes of binary evolution and cluster dynamic evolution. Moreover, they can affect the integrated spectrum of indistinguishable host star cluster, resulting in underestimating the age of the host cluster. Blue straggler eclipsing binaries in open clusters can be used to probe the formation and evolution of blue stragglers. Firstly, by making long time series photometric observations for open clusters using 50BiN China node （50 Centimeter Binocular telescope, China West Normal University Observatory）, we obtain a complete sample of blue straggler eclipsing binaries in the observed star clusters,determine their basic physical parameters (mass, radius and so on ) and other observed properties, and then probe their formation mechanism and evolution. Finally, we conduct a large sample statistics study for their observed properties，formation mechanisms and evolution, to determine the dominated formation mechanism and contribution from others and provide some observed evidences and implications for the further development of the formation mechanisms and evolution theories of blue stragglers in open clusters. In addition, this program can promote the development of observation astronomy in China West Normal University.