In the process of developing distributed applications, system reliability, availability, openness, resource sharing and reusability, etc is very complex and difficult to solve. Resent researches about agent theory displays that agent-oriented technology may be an effective effort in handling these problems. This paper first discusses the relationships of distributed system in agent viewpoint, then presents an agent framework based on distributed object, which could be used to construct, enterprise distributed application. To enhance the openness and resource sharing in distributed systems, an agent communication language - KQML is introduced and implemented in the framework.