With the rapid development of E-Government services, change management has become a main focus. Today, the most system management tasks are still performed manually. This can be easier error-made, high time-consuming and more human-needed. So we present a Slight Ontology Framework (SOF) to solve it. It combines itself with Business Process Modeling theory to make the process part of SOF and introduces the meta-modeling theory to analysis of the features of changes based on ontologies used to describe services for semi-automatic change management. Although we use E-Government domain as the example, the approach is a general solution in other domains.