Abstract: To promote the in-depth exploration of rosemary functions and the development and utilization of bioactive compounds, the review briefly introduced the application status of rosemary and its extracts in agricultural-related fields, and focuses on their latest research progress in the field of plant production, including their applications in the prevention and control of bacterial diseases, fungal diseases, viral diseases, and plant pests, as well as their effects on other plants, including allelopathy and weed control. In future studies, molecular biology, genetics, cell biology, and other technical means should be used to deeply reveal the molecular mechanisms of individual or combined compounds of rosemary that exert antibacterial and insecticidal effects. Priority should also be given to the impact of rosemary and its extracts on non-target objects and the agricultural ecological environment, such as changes in soil microbial communities.