Magnesium plays a vital role in the growth and quality of tea plants, influencing key processes such as photosynthesis and the synthesis of important metabolites. However, tea plants often suffer from magnesium deficiency due to factors like poor soil conditions and unbalanced fertilization. This deficiency can lead to reduced tea quality, impacting taste and market value. Given these issues, it is crucial to explore how magnesium affects tea plants at a molecular level, paving the way for more effective nutrient management strategies in tea cultivation.