With the development of multimedia applications, QoS guarantee technology becomes more important. There are different QoS strategies and arithmetic for different types of multimedia applications. It is useful to study how to make the QoS service adapt to the heterogeneous of distributed applications, how to make it easy to change the QoS strategies and arithmetic according to the types of applications. This paper puts forward a QoS manager object model called IQoSM. It provides an entirely QoS manage framework, every module can be developed independently, and work coordinated. With the IQoSM, people can easily change the QoS strategies and arithmetic without wholly reprogramming and redesigning. It is flexible and easy to be reconstructed. It can also work together with CORBA A/V STREAM mechanism.