日震学研究取得了巨大的成功，使我们获得了大量关于太阳内部结构和动力学方面的知识。同时也极大地推动了类太阳恒星的星震学研究。但是在目前的研究中还存在着几个重要的困难尚未解决，如（1）太阳表面低丰度问题；（2）太阳内部磁场的起源问题；（3）磁场与转动的相互关系问题；（4）极类太阳恒星在主序演化阶段锂丰度的衰减和弥散问题。因此，我们面临的重大机遇和挑战是如何解决这一系列困难？现有的恒星演化模型难于解决这些难题。本项目主要研究太阳内部转动和磁场的相互关系和磁场的起源问题；研究转动、磁场及其相关物理过程导致的角动量和化学元素转移机制；建立满足日震学限制的非标准太阳模型。结果对理解与太阳相似的恒星有重要的科学意义，从而揭示这类恒星年龄、Li丰度以及转动的相互关系，有助于我们理解恒星及行星系统的形成及演化问题。

Helioseismology has revolutionized the study of the Sun. Helioseismic data have enabled us to study the internal structure and dynamics with unprecedented detail. This has also allowed us to use the Sun as a laboratory to study the basic properties of stellar matter for solar analogy stars. Helio- and asteroseismology has turned out to be an excellent way to test the physics of stellar models. Until recently, more extensive information, such as stellar activities and oscillations, do not yet allow a detailed confrontation with the description of the physical properties of either the stellar material in the deepest internal layers, or of the dynamics of the outer stellar envelope. In fact, the models are extremely simple compared to the potential complexities of stellar interiors. We lack detailed knowledge of some important physical processes relevant for the description of stellar interiors. Among the questions whose answers are sought are: (1) whether we should adopt solar new abundances; (2) the generation of the internal magnetic field of the Sun; (3) the interaction between rotation and magnetic field; (4) lithium depletion and dispersion of solar-analog stars during main-sequence stage. Therefore, efforts to trace magnetic field and rotation in the stellar interior have proved more challenging. The interest is mainly to investigate the effects of rotation and magnetic fields on the solar interior and global parameters, alongside the new abundances. The some important physical processes will be considered in stellar modelling, including the internal magnetic fields, the rotation, the interaction between rotation and magnetic field, angular momentum transport and element mixing in the stellar interior, etc. The results will be encouraging us to apply the model to solar analog stars, and to get a proper interpretation of the existing helioseismic and asteroseismic observations. Moreover, they can be used to find the correlation between age and Li abundance, or rotation, and provide interseting insight to the study the formation of extra-solar planetary systems.