Long-term hiking can cause a certain degree of damage to the knee, but the control of the specific number of walking steps is related to age, physical condition, weight, etc. and cannot be generalized. Walking and strolling are good ways to get fit and lose weight, and everyone can participate, but there are no clear rules about the number of steps. If you are an athlete or daily fitness frequency, physical fitness, it is recommended to hike 20-30,000 steps a day, preferably not more than 30,000 steps, otherwise it is easy to cause fatigue of the tendons and muscles around the knee; if you are a general public, it is recommended that the number of daily hiking steps do not exceed 1-2 million steps, too long hiking will not only make the body extremely easy to fatigue, but also easy to cause joint wear and tear, causing arthritis; if If the elderly, overweight or obese people, it is recommended that the daily hiking time should not exceed 3000-5000 steps to avoid damage to the knee joint. It is recommended that everyone participate in exercise, but it is necessary to exercise moderately, otherwise it will be counterproductive.