Recently many communication systems based on three dimensional spaces are proposed. In those systems, in order to support many users in the same space, QoS control function based on the distance among the avatars is mainly applied. For this reason, the computing and network resources in the communication systems are wasted. In this paper, we suggest a new QOS control to take account of user's interest and status information in addition to the distance among the avatars. Using this method, un-necessary communication and resources can be reduced and more interested communication can be attained with higher priority in the large communication space.