The first decade of the 21st century is the "Decade of Bone and Joint Health", to warn people drawing attention to the brain and bone health. The second millennium of mankind's most significant achievements is the health that has been paid attention to extend life longer. Scientists declare the information about human life will extend at 2030.

"Reasonable diet, regular exercise, restrict alcohol quit smoking, psychological balance", these four cornerstones of health are needed to care, that proposed by WHO, the suggestion combined with the theory of generalization with the scientific, civilized and healthy lifestyle.

There are six lifestyles suggested by the Health and Welfare Department, can be benefit of health: one, quit smoking; two, reduce times of drinking; three, adjust the diet structure; four, exercise as more as possible; five, make an examination regularly; six, obey the traffic regulation. The United States has researched for 30 years with efforts, the mortality proportion of cardiovascular disease has declined 50%, mainly achieved by improving their behavior and way of life. The second health revolution surging to chronic non-communicable diseases in developed countries and some developing countries have been effectively controlled and achieved remarkable and gratifying results.

There are some features to affect human health:

First, genetic factors: There are many human diseases are related to genetic, for example hemophilia, albinism, hypertension, diabetes.

Second, psychological factors: scientific research shows that many human diseases are related to psychological factors. With increasingly competitive today, accelerate the pace of life, the stimulation of various external factors can lead people to mental stress, led to mental crisis and mental disorders. Under the statistics about out-patients, almost 70% of the disease relate to the development and social psychological.

Third, behavior and life style factors: chaotic diet habit, smoking, be addicted in alcohol, exercise few, the mental strain, to live unreasonable, take drugs blind, the nature chaotically, or not to obey the traffic regulations finally to lead to death.

Fourth, an important factor, environment factor include natural environment and social environment.

Natural environment is humanity's livelihood material base, the ecological damage and the environmental pollution causes the harm inevitably to the human body health, this kind of harm compares to other factors, has the characteristic of slow effect, the long cycle, big scope, and large population, consequence serious.

Social environment contains politics, economy, culture, education, science, housing, security and public. The political turmoil, the war, poor, ignorant, the housing crowded, those social factors pose the very big threat to the health.

Fifth, biology factor mainly includes pathogenic, pathogenic microorganism.

Sixth, hygienic service factor mainly includes the medical care system and the medical service level and the quality. If there exists flaw in the hygienic service and the society healthcare system, then the result will be not ideal, it is not likely to effectively avoid and control disease, to be good for people's health.

The result of investigation showed the human health in the risk situation, the proportion of life style is highest, account for 60%, and the medical service lowest, only 8%.