Osteoporosis refers to a decrease in the amount of bone tissue within each unit. Bone growth and development begins in the embryonic period and continues for more than 20 years after birth. The amount of bone no longer changes in adults, but bone metabolism continues unabated, i.e., the two processes of bone production and bone resorption are in balance. Bone production remains constant after age over 40 years. However, bone resorption increases, and after several decades the amount of bone tissue is only half the amount it was at age 30. Pornmer proposed this in 1885, but the understanding of osteoporosis has evolved over time with the development of history and technological advances. In the early years, it was generally considered that a reduction in bone mass throughout the body was osteoporosis, while in the United States, fractures in the elderly were considered to be osteoporosis. It was not until the 3rd International Symposium on Osteoporosis held in Denmark in 1990 and the 4th International Symposium on Osteoporosis held in Hong Kong in 1993 that osteoporosis was given a clear definition and recognized worldwide: primary osteoporosis is a systemic bone disease characterized by a decrease in bone mass and degradation of bone microstructure, resulting in increased bone fragility and susceptibility to fracture. Understanding and awareness of the definition of the concept of osteoporosis: ①Bone mass reduction: should include the reduction of bone mineral and its matrix in equal proportion. ②Bone microstructure degeneration: due to imbalance of bone tissue resorption and formation, etc., which is manifested by destruction, thinning and fracture of bone trabecular structure. ③Bone brittleness increases, bone mechanical strength decreases, fracture risk increases, and microfracture or complete fracture easily occurs due to reduced load bearing capacity. Compression fractures of the lumbar spine may occur silently, or fractures of the distal end of the flexor, proximal femur, and upper end of the limb bone may occur with little external force.