There is no specific standard for how many steps a day a 70 year old can walk, to the extent that it is not overly strenuous and does not trigger any other discomfort in the body. Walking can promote calorie consumption and enhance physical fitness. The number of steps is not the more the better, the elderly group of joints or bones may occur degenerative changes, if the local joints have damage, walking too many steps will increase the burden on the joints. Adults should walk 6,000 steps per day to achieve a moderate level of intensity. For 70 year olds, this standard needs to be lowered moderately. In order not to overwork, not to trigger other physical discomfort. The elderly fitness exercise, must master the appropriate exercise intensity, especially pay attention to the cardiovascular and cerebrovascular system changes, step by step exercise, to ensure the safety of exercise. According to the exercise after their own fatigue situation to decide. Older people walking exercise, if there is discomfort, if necessary, need to go to the hospital for medical treatment, so as not to affect the health of the body.