The article describes a study of features of formation Personal Knowledge Space. There was analyzed the components of the Knowledge Space. A conclusion is made that tool for integrate various resources into a single structure can be ontology. Legal knowledge ontology is considered as the main link of model of Personal Knowledge Space. The characteristics of the software package that implements the ontology in the domain of law are presented. Figs.: 1. Refs.: 12 titles. Keywords: personal knowledge space; domain of law; ontology; model.