Babies crawling on the floor is not harmful to the knees, so parents should not be overly concerned. Crawling on the floor during a child’s infancy is a necessary step before standing upright. Letting your child crawl a little more is very beneficial to the child’s growth and development. Babies crawl at this time without harm to the knee for several reasons: 1. At this time, infants and toddlers, the soft tissue cover around the knee joint is still relatively thick. This is because the subcutaneous fat here is thicker compared to adults, so it will play a very good cushioning vibration protection role for the knee joint. 2, children at this time, the bone around the knee joint are very soft, so even if they suffer some impact, or vibration, friction, then it will not cause particularly large damage. 3, even if you take a step back, the knee joint around the injury, then for At this point in time, the recovery is also very fast. There may be recovery within a few days or a week. So to sum up, it is harmless for your baby to crawl on the floor and to let your baby crawl a little more.