CytochromeP450enzymes (CYPs), a class of heme monooxygenases, are widely distributed across bacteria, archaea, and viruses, as well as in higher plants and animals. They regulate the metabolism of various endogenous substances and exogenous compounds, accounting for approximately 1% of the protein-coding genes in plants. These enzymes play a crucial role in the biosynthesis of plantbioactivemetabolites, growthregulation, and stressadaptation. Currently, over 300,000 CYPs are recorded in databases, yet only a small fraction (less than 0.2%) has undergone functional characterization. This review focuses exclusively on the latest research progress (2020-2025) regarding 2 key aspects: the involvement of CYPs in the biosynthesis of important bioactive compounds in plants and their significant physiological functions in plantgrowth, development, and stressadaptation. The aim is to enhance our understanding and provide examples for the functional exploration of CYPs in plants, thereby paving the way for innovative applications in the field of biotechnological breeding and synthetic biology.