Introduction: As the population aged 65 years or older in Japan grows, the number of people who receive long-term care is increasing. Amongst the various disease groups, stroke sufferers are currently the largest group who use home care nursing services. This study explores the factors that affect the insurance system’s home care services use rate among stroke patients and their main caregivers in Japan. Aims: This study aims to identify the key factors of stroke patients and that of their main caregivers to determine their relationship with the use situation of home care services under Japan’s long-term care insurance system. Methods: We enrolled 14 subjects and their caregivers in the Tokai and Kinki regions of Japan. Questionnaires were used for the main caregivers and survey forms were used for home care nursing center personnel. The data were analyzed by univariate analysis. Results: Barthel Index (BI) score and the number of higher brain function disorders were found to be relevant to the use rate of long-term care insurance:. As a result of removing an outlier, the rate of number of units for home care increased as the BI score fell. Conclusions: Two characteristics of stroke patients were found relevant to the use rate of long-term care insurance: BI score and the number of higher brain function disorders. As a result of removing an outlier, the rate of the number of units for home care nursing increased as the BI score fell.