"I have been busy for most of my life and should have a good rest after retirement." This is the idea of many middle-aged and elderly people. A study by psychologists at Harvard University in the United States found that "being busy is better than being idle", and people who are moderately busy live 29% longer than ordinary people. According to a paper published in the American Journal of Occupational Health Psychology, people who still work after retirement are in better physical and mental state than those who stop working completely. The former has a low probability of serious illness 17% and a high score of mental health test (3 1%). Cheng Shujun, an academician of China Academy of Engineering and a professor at Cancer Hospital of China Academy of Medical Sciences, once pointed out in an interview with Life Times that if you stay at home and do nothing after retirement, your life will stagnate and your physical and mental functions will decline. In order to live a long and healthy life, the elderly should learn to "retire constantly" and find something to do for themselves. According to the different situation of the elderly, we can be roughly divided into seven types, and experts are asked to give suggestions on reasonable arrangements for retirement. Love work. Doctors, teachers, researchers, writers and other professions "get more popular as you get older." There are many people who have retired from these industries, who love their jobs and want to exert their afterheat. Compared with young people, they are rich in experience, solid in technology, mature in mentality and full of persistence in the cause they love. If you leave your job completely, it will not only be difficult for you to adapt for a while, but also a loss to society. Researcher Li Juan, director of the Research Center for Geriatrics Psychology, Institute of Psychology, Chinese Academy of Sciences, pointed out that the more people invest in their work, the harder it is for them to accept retirement. Especially employees in the above industries are more likely to have various psychological barriers after retirement, and men are more likely to have psychological gaps than women. This is because men pay more attention to their careers, spend more time and energy on their work, and suddenly leave the post where they have worked for half a lifetime, so it is easy to lose their life goals and sense of accomplishment and have a sense of loss. After retirement, such people can return to work through part-time, re-employment and consultation, and continue to shine in this industry. For example, Wu Daguan, the father of China aero-engine, is still active in scientific research at the age of 80; Academician Cheng Shujun mentioned earlier, Professor Hu Dayi, a famous cardiovascular expert, Professor Luo Kangxian, a famous infectious disease expert in Southern Hospital, and other medical experts also insisted on clinical and scientific research fronts. Because their self-worth has been realized and their lives have been enriched, these old people are full of energy and healthy. Experts remind that old people who return to work should adhere to the principle of "green leaves lined with red flowers", give more support to young people, give more advice and help, make as few decisions as possible, and interfere less in specific affairs.