This paper is about a detailed designing and developing process of the online car insurance. The system was built by JSP technology, SSH framework and JDBC technology under the J2EE framework. The system has great functions that you can visit the website, choose the insurance you want and pay for it wherever or whenever you are. Users only need to enter the basic information of vehicles (brand model, debut date, vehicle identification number, etc.), the prices of insurance from different insurance companies will be given automatically. Users can visually see the various insurance companies offer different options and do choose. The premium can be paid online after you make a final decision which is the one suit for you best. Because you can easily pay for it by the internet way, the system is more convenient, fast and favorable than the existing model of insurance marketing (excluding sales through insurance agents) suit for a huge range of car owners.