The general age of babies touching their feet is not exactly the same, some babies may be earlier, some babies may be later, the average is in about 4-7 months. Babies touch their feet mainly because they are more flexible, some babies may be able to use their little hands to grab their feet when they are 3-5 months old; some babies may be slower to develop and may be able to touch their feet after 7-8 months. Touching the feet does not represent the level of movement of the baby’s limbs and is also related to the amount of clothes the baby wears. If the baby is 3-5 months old, it happens to be in the summer when he or she wears less clothes and has better flexibility of hands and feet, the chance to touch the feet may be relatively early. But if in winter, the baby wears more clothes, the baby is not very flexible to do the action, may touch the feet a little later. In addition, some of the babies are fat, may do to touch the foot movements will be worse, thin baby do touch the foot movements may be a little more flexible. Babies do have some rules for fine motor or gross motor, but each one is not exactly the same. In the large movements, special attention should be paid to the fact that babies should generally learn to lift their heads at about 3 months, then learn to roll over at about 3-6 months, and should sit better at about 6 months, so there may be different large movements at different stages. For touching the feet action, in all the big movement is not included, touching the feet is just a random simple grasp, can not fully represent the child’s level of motor and intellectual development level, but also refer to the child’s development of the season and age state.