Home cares and facility cares are important in Japan because of aging issues in Japan. One of the most important things in a care is Quality of Life (QOL) of patients. However, QOL of caregivers is also important and increasing a turnover by a low level of QOL is becoming an issue in japan. To solve the lack of caregivers, some research indicates the importance of improving QOL of caregivers. However, in most situations, giving better QOL of patients and caregivers is a trade-off. We propose a prototype system for a care matching to optimize QOL of patients and caregivers considering their care categories and relationships of patients and caregivers.