Most old people will suffer from a situation that they cannot take care of themselves more or less in the last part of their life. The period for the old people who are over 80 years old and cannot take care of themselves is expected to be 1.1 years for male and to be 1.6 years for the females. During this period, home health care is necessary for this group of people. Economic security and free movement are the two basic conditions for their survivals. When old people cannot take care of themselves, home health care is certainly the most important factor to decide their most fundamental survival quality. Home health care in daily life is an issue concerned most not only by old people and also by their children. The old people who can take care of themselves have a large need on the cultural activities, education, tourism and so. However, for those who cannot take care of themselves, providing home health care can be a great thing like sending them charcoals in a cold winter. Therefore, making researches and discussions on solving the home health care problems in the life daily of old people are of very important practical significance.

Public health problem is not a simple health problems, it touches upon economic development, education, culture, ethics, and national survival problems. It is also a globle problem need every one to prevent. The index of public health influenced prople's survival conditions. In this harmonious society, public health which relates to the vital interests of the broad masses of the people gets more and more extensive attention. Along with the change of social economy, technological development and life-style, the environmental factors affects public health more complex. Natural disasters such as epidemic, tsunami in Indian Ocean, earthquake in South Asia , typhoon in California swallowed with people's lives and property and make a serious threat to the economic development of all countries and people's life safety. When we face all the issues, we must put prevention at first place. We should attach more attention to the construction of public health.