It is very important to select the service based on semantic and collaboration, collaboration will be the bridge between request and resource, by which we can get more useful relations and it is the foundation to select the service user satisfied. Using ontology to organize the resource and request, and by applying the description logic to descript the semantic, we propose a service selection model based on semantic and collaboration. In the model, we discuss the importance of the collaboration, and we research an algorithm to do collaboration between request ontology and resource ontology, by which we get new relations, and also, we discuss the service selection algorithm based on the semantic and collaboration. Finally, an example shows the processing of collaboration and service selection, which proved that our method is accessible.