Abstract: With the development of network communication technique and innovation of control system, it is hotspot to realize robot opened and distributed controlling network system that is based on the technique of network. This paper brought out the theory of robot controller based on C/S network model, the development of Client server programs of robot control system based on RPC method under Windows NT operation system is focused, further more, DCOM encapsulation of software is realized. In the end, Experiments are illustrated to prove the robot flexible system Win 32 execution program based on DCOM under Windows NT and long-distance robot supervising system is based on Web programming, which shows the excellency of distributed controlling network system of robot controller based on C/S model.