Normal adults over 50 years of age, the annual bone loss is less than 1%, but bedridden for a week, the loss of bone can be greater than 1%, and then the rate of bone loss slightly slower, after 3 to 4 months can lose 20% of the whole body bone. It has been found that the spinal bone is more likely to lose bone in the case of bed rest, bed rest for 36 weeks can be lost 20 to 40%, so suffering from cerebrovascular disease, paraplegia, fractures and other diseases, long bed rest prone to osteoporosis. Weight bearing and exercise is a very effective mechanical stimulation for bone growth and rebuilding, and muscle contraction is the most effective for bone mechanical stimulation and maintenance of bone mineral content. Therefore, the above-mentioned patients should try to reduce the time of bed rest, encourage intermittent waking up activities or bed exercise, and at the same time carry out preventive treatment of osteoporosis, such as oral calcium, vitamin D3, and low-frequency pulse electromagnetic therapy by osteoporosis treatment instrument if available. Specific exercise methods: weaker patients can be family members or medical personnel to carry out whole body muscle massage, mainly using the method of muscle pinching, to stimulate muscle contraction. Passive movement of limb joints, stimulate the bones and reduce the loss of estimation. Muscle massage is performed twice a day, each time to the extent that the patient does not experience fatigue. Patients in relatively good health can perform active muscle contraction (making muscles exert) and active joint activities, including all joints of the limbs, which can reduce bone loss and prevent joint adhesions and dysfunction. Patients in good health can tie a cloth belt at the head of the bed, and the patient pulls the belt with both hands and stretches the head of the bed with both lower limbs. This is done 3 to 4 times a day, 10 to 20 strokes each time. Bedridden patients who are in good health can do sit-ups and functional exercises for the lumbar and back muscles. If the condition allows, the patient can walk on the floor with the help of crutches at an early stage.