Osteoporosis is a systemic bone disease characterized by low bone mass and damage to bone microarchitecture, leading to increased bone fragility and susceptibility to fracture (World Health Organization, WHO). Osteoporosis can occur in different genders and ages. However, it is mostly seen in postmenopausal women and older men. The incidence of osteoporosis has jumped to the 7th place among various common diseases in the world. The current elderly population in China is about 130 million, and the number of people over 60 years old is increasing at a rate of 3. 2% per year. The incidence of osteoporosis in China is about 6.6%, and the total number of patients is 60-80 million, which is the highest in the world, and the ratio of male to female is about 1:(2-3), and the patients are mainly elderly people over 60 years old and post-menopausal women. The basic measures for prevention and treatment of osteoporosis “basic” is important and indispensable. However, it is not “all” or “only”. The scope of “basic measures” includes: primary prevention and secondary prevention of osteoporosis, osteoporosis drug treatment and rehabilitation treatment. (1) A balanced diet rich in calcium, low in salt and moderate in protein; (2) Appropriate outdoor activities and sunshine, physical exercise and rehabilitation that contribute to bone health; (3) Avoid smoking and alcohol abuse, and be careful with drugs that affect bone metabolism; (4) Take various measures to prevent falls, and pay attention to the presence of diseases and drugs that increase the risk of falls; (5) Strengthen protective measures for yourself and the environment (including various joint protectors). including various joint protectors), etc. 2.Bone health basic supplements Calcium Our nutrition society has set the recommended amount of calcium intake per B for adults 800mg is the appropriate dose to obtain the ideal bone peak and maintain bone health, if the supply of calcium in the diet is insufficient, calcium supplements can be used, the recommended daily calcium intake for postmenopausal women and the elderly is 1000mg. The average daily calcium intake is 500-600mg. Calcium intake can slow down the loss of bone and improve bone mineralization. When used for the treatment of osteoporosis, it should be used in combination with other drugs. There is insufficient evidence to suggest that calcium supplementation alone can replace other anti-osteoporosis drug therapy. Calcium selection should consider its safety and efficacy, and should be avoided in hypercalcemia. In addition. Care should be taken to avoid mega-doses of calcium supplementation potentially increasing the risk of kidney stones and cardiovascular disease. Vitamin D promotes calcium absorption, is beneficial for bone health, maintains muscle strength, improves physical stability, and reduces the risk of fractures. Vitamin D deficiency can lead to secondary hyperparathyroidism and increase bone resorption, which can cause or worsen osteoporosis. The recommended dose for adults is 200 units (5g)/d, and for the elderly, who often have vitamin D deficiency due to lack of sunlight and impaired uptake and absorption, the recommended dose is 400-800 Iu/d. Vitamin D can be used in doses of 800-1200 IU for the treatment of osteoporosis, and can also be used in combination with other drugs. The International Osteoporosis Foundation recommends serum 25OHD levels equal to or higher than 30ng/ml (75nmol/L) in the elderly to reduce the risk of falls and fractures. In addition, clinical application of vitamin D preparations should pay attention to individual differences and safety, regularly monitor blood and urine calcium, and adjust the dose as appropriate.