According to industralization the percentage of working women with children is on the continuous increase. There has been a growing concern over important health problems of middle-aged women, especially with working women. But we didn't know how to care of themselves yet even if it was importment to fint out that. So this reseach was an attempt to identify the nature of experience of their health management so that it is to be contributed to be knowledge development of women' health management strategy. The phenomenological approach in qualitative studies was used to serve this purpose. Subjects were 10 middle-aged working women having children in well-being state. The result of this study was as follows : 'Diet pattern' was to unbalanced and irregular but they tried to correct balanced and harmony dietary life. 'Exercise' was very simple and irregular. They have closed-minded of kinds of exercise. 'Controlling the environment and their minds' was to obtain emotional stability and be free from stress. They put emphasis on refraining from being overtiring and watching their condition carefully. They always tried to keep the peaceful mind. 'Reducing fatigue' was to be bathing, hot streamed-bath, finger pressure therapy, massage, singing, communication with others and maintenance of personal relationships. 'Identification of self-esteem' was very key point to maintain their health. Working regulary gave them to please and value of the life. 'Work oriented life pattern' was to be harm their health state so that it need to be available clinics to check up their health state after work. The rest of this study showed that it need to be social support for working women to work with comfort. Further study regarding working women engaging in the lower level is nesessary.