Construction of autonomic capability on spacecraft faces such developing problems as requirements increasing, variability, more complexity, and unknowingness of trend. It is needed to alter development method and architecture design to suit these trends. Based on the research of current four methods, a fifth method, a development mode which is model-based and data-oriented, was proposed. A service model with plug-and-play capability was given, and the electronic data sheet technology was used to construct the bottom-up plug-and-play capability from device level to functional service level. An intelligent planning service instance using this service model was designed and described. The purpose of the fifth method is to provide a persistent development base for the construction of the autonomic capability on spacecraft and the intelligence management and control ability between space and ground.