Korea and Japan are close neighbor geographically, and have similar cultures, but different socio-economically. The purpose of this study was to compare health age in a wide age range between Korean and Japanese middle-aged women. The subjects were 220 (122 Korean and 98 Japanese) middle-aged women, aged 32 to 64 years. Eight items are related to health age were measured. The result of the comparison clearly indicated that Korean middle-aged women had a higher health age than Japanese middle-aged women (P＜0.05), because Korean middle-aged women lowered the physical fitness compared with Japanese. From these results, it can be concluded that advancing age significantly for health age in middle-aged women of both countries, and that the lower health age reflects a lifestyle of more vigorous physical fitness in Japanese middle-aged women.