系统阐述了太阳中微子“亏缺” 问题出现的背景，包括介绍标准太阳模型， 太阳内部的核聚变反应，太阳中微子能谱和流量的理论估算，以及太 阳中微子探测实验和结果。讨论了为解释太阳中微子“亏缺”而提出的各种非标准 太阳模型以及近年来愈益受到重视的中微子振动问题。
The background for the deficit of solar neutrinos, including the standard solar models, the nuclear fusions in solar interior, the theoretical estimations for the energy spectrum and flux of solar neutrinos, as well as the solar neutrino experiments and their results, are introduced in the first two sections of the paper. Then various non--standard solar models proposed to explain the deficit of solar neutrinos are described. Finally, the recent reports on the neutrino ocillation are briefly disussed.