 The article discusses the importance of vitamin Aavita for maintaining vision, promoting growth and development, and protecting epithelium and mucus integrity in the body. It also highlights Vita's role as an anti-inflammation vitamin that enhances immune function. The authors review recent literature on Vita's involvement in the development of the immune system and its regulatory roles in cellular and humoral immune responses. Additionally, they introduce the clinical application of Vita in the treatment of several infectious diseases. Overall, the article emphasizes the significance of Vita in immunity research and its potential therapeutic benefits for various health conditions. This article was authored by Zi Huang, Yulu, Guanyin Qi, and others.