Women’s knee joints break down faster than men’s. Many women begin to suffer from joint pain at a young age, women develop osteoarthritis at an earlier age than men, and more women than men suffer from osteoarthritis. Eighty percent of patients who eventually undergo artificial knee replacement surgery for severe osteoarthritis resulting in joint destruction are women. And 80 percent of patients who receive an artificial hip replacement for hip dysplasia or dislocation are women. Why do women’s joints break down more quickly than men’s? Why does congenital hip dysplasia also affect girls more often? Start with the theory that training muscles protects joints. Men are born with stronger muscles and bones than women. Men’s occupational characteristics, such as hunting, war, and labor, determine that men are more developed in skeletal muscles, stronger, and recover faster; while women are relatively not engaged in power labor, mostly fatigue, strain work, poor muscle strength, muscle ligaments easily injured and tired bones are not easy to recover. From the hormone metabolism theory of gender differences interpretation of human skeletal muscle aging, is with the human body aging at the same time progressive, are dependent on hormone control regulation. Women with reproductive functions consume more muscles and bones than men, and estrogen, an important hormone that supports women’s lives, will drop and decline suddenly after menopause, with a great contrast before and after menopause. In contrast, androgen levels belonging to men are a long and slow process of decline and decay, and the hardness of their bone trabeculae and collagen content also degenerate more slowly than in women. The sexual and reproductive abilities of men are likely to be maintained until the later years of life, especially for men who have sports and fitness habits, the knee and hip joints are not too problematic until the age of 70 or 80. From the anatomical theory analysis of the differences between men and women Women due to the need for childbirth, the pelvis is wider than men and more likely to be tilted back, making the hip joint valgus, more likely to cause a series of hip joint diseases, and more likely to be associated with the knee joint, the degree of wear and tear of men than women is much lighter. From the physiological theory analysis, the posture of human lifetime has a profound impact on joint health, and the different ways of toileting of human men and women affect the health of the knee joint. When men stand to go to the toilet, the knee joint only bears twice the weight of the weight, while women squatting to go to the toilet knee joint bears six times the weight. In summary, women are more likely than men to develop knee arthritis at a relatively younger age, and if knee arthritis is not treated scientifically and correctly the disease progresses to an advanced stage resulting in joint destruction and pain, and can only be replaced by artificial joints. Emphasis is placed on training the muscles to protect the joints and conserve them. Women must adhere to physical exercise that does not involve the joints, such as swimming, cycling, walking, gym training muscles to protect the joints, so that the bones and muscles remain strong from young to old. Women also have to go through menopause smoothly, that is, not to treat menopause as menopause, but only as a life day by day, every day, exercise, calcium, eat and drink well, sleep well, and do not forget to sunbathe well. I have been studying and working in developed countries for many years, and I am also a frequent expatriate. Our women are still far from being healthy in terms of muscles and bones, so our women suffer more from osteoarthritis and have more artificial joints than they do.