The purpose of this paper is to describe the grounded theory method; especially of the research process in studies using the method. The article is based on the examples of authors' studies of nursing education and nursing practice. The grounded theory method is qualitative and inductive, analyzing data from the empirical world, from which categories and concepts are emerged. Analysis is made by coding and memorizing. The emerging categories will be structured, restructured and developed continually during the research process. In the final theory the concepts, the relationships between them and their internal and external differences are defined in the social process. The meaning of a good description of the research process is emphasized, because the evaluation of the research studies using grounded theory method are based on well documented research process.