The present findings suggest that community nursing academics in Japan and Korea need to conduct original research using advanced and variety research designs and methods in order to optimize their respective home care services. In Japan, advanced research design, such as prescriptive research design or outcome research, should be introduced, based on knowledge accumulated through content analysis research. Quasi-experimental intervention studies are therefore necessary. In Korea, detailed qualitative research, such as that performed in Japan, is warranted. Combining evidence from home care service research obtained in both countries would be advantageous in terms of service development. It is suggested that future collaboration be undertaken to improve the variety of research design and method especially in both countries under the aged society. In addition, it provides information concerning research concepts, which can be applied to optimize future home care services research. These data suggest that research methodology remains at a primary level in both countries. In Japan, more research into the prescribed level or outcome of home care services is warranted. In Korea, more qualitative research is needed. These changes should lead to improved home care services in these countries.