Purpose: This study was performed to propose an ontology methodology based on standardized nursing process as framework in obstetric and gynecologic nursing practice. Methods: The instrument used in this study was based on the nursing diagnosis classification established by North American Nursing Diagnosis Association(NANDA)(2009-2011), fifth edition of the Nursing Interventions Classification(NIC)(2008), forth edition of the Nursing Outcomes Classification(NOC)(2008)developed by lowa State University and systematized nomenclature of medicine clinical terms(SNOMED CT). The nursing Records data were collected from electronic medical records of knowledge and experience, it will also help to determine nursing diagnosis logically by using standardized nursing process. It will be utilized as the method to construct ontology including interoperability in other nursing units. It will be presented nursing interventions according to nursing interventions according to nursing diagnosis and thus will be easier to establish nursing planning. This can provide immediate feedback of the nursing process application.