In order to enhance the functionality of a previously developed intelligent ship monitoring systems,the function for monitoring critical ship engine room equipment is developed.The design of the backend interface for that function is highlight-ed.The backend interface is developed based on SpringBoot framework to facilitate the development work.MySQL(My Struc-tured Query Language)is adopted to ensure efficient data storage and query management,and MyBatis-Plus is used to make database operations convenient,thereby,enhancing code readability and maintainability.Modular approach is used in the de-sign process to ensure that each interface function is clear and easy to manage.RESTful API(RESTful Application Program-ming Interface)is also employed for data interaction with the frontend,ensuring clear,efficient,and secure data transmission.The design is verified through simulation and field trial on ships.