磁重联一直是太阳物理研究的重点，以前从观测上认证磁重联还是极具挑战性的，而随着高分辨率望远镜的运行，包括我国1米新真空太阳望远镜NVST，这为更深入细致地研究磁重联物理性质提供了条件。本项目主要利用NVST数据研究小尺度磁重联和电流片：1、认证小尺度磁重联，发现更小尺度的磁重联，给出小尺度磁重联更全面的观测特征，计算小尺度磁重联释放的磁自由能，得到在不同大气中小尺度磁重联的观测特征及判断小尺度磁重联主要发生在哪一层次；2、研究磁重联中小尺度电流片的物理性质，给出小尺度电流片随时间演化的性质以及光谱信息，发现小尺度电流片中的精细结构及其物理性质；3、研究小尺度磁重联在太阳爆发活动中的作用，调研两者因果关系，给出是由于小尺度磁重联触发爆发活动还是由于爆发活动引起了小尺度磁重联。通过对小尺度磁重联和电流片的观测研究，印证现有理论模型的正确性，为建立更完备的磁重联理论提供观测依据。

Magnetic reconnection has always been the focus of solar physics. Due to the low resolution of previous observation equipment, it was difficult to confirm the occurrence of the magnetic reconnection based on the observations. However, in resent, more and more high-resolution telescopes are operating, including the 1-meter New Vacuum Solar Telescope (NVST) at Fuxian Solar Observatory. One can study the magnetic reconnection and its physical properties in more detail. The process of small-scale magnetic reconnection and small-scale current sheet are studied in this project using the NVST data. Firstly, the small-scale magnetic reconnections will be certified. Small-scale magnetic reconnections are expected to be found. We will give more comprehensive observational evidences of small-scale magnetic reconnection. The magnetic free energy released in the small-scale magnetic reconnection will be calculated. The difference of observational features of the small-scale magnetic reconnection in the multiple solar atmosphere will be investigated. We will determine in which layer the small-scale magnetic reconnection occurs. Secondly, the physical properties of small-scale current sheet will be studied. The evolutional properties of the small-scale current sheet will be given, and its spectral information are calculated. The fine structures and its physical properties of the small-scale current sheet will be found. Thirdly, the role of the small-scale magnetic reconnection in the solar eruptions are studied. We will investigate the causal relationship between them and give that whether the solar eruption is triggered by the small-scale reconnection or the small-scale magnetic reconnection occurs due to the solar eruption. Based on the observational study of small-scale magnetic reconnection, we will confirm that whether the existing theories is correct, and this project provides observational evidence for establishing a more complete theory of the magnetic reconnection.