Abstract: Traditional client/server distributed systems provide user service by using the data request/response mode between a client and a server. For grid users to use and share the resources expediently and effectively, a grid system needs a new architecture of utilization mode with a corresponding evaluation method. The K/G mode for grid is proposed in this paper, whose key feature is that service and data are dynamically deployed to a grid terminal when a user plugs his grid key into the terminal. Also analyzed is how this mode is used to embody the dynamic and high productivity of a grid.