For vitamin deficiency in children aged 7 weeks, the following measures can be used to deal with the situation. First, timely supplementation of vitamins, if children have vitamin A and vitamin D deficiency, they can promptly supplement vitamin AD drops, which is the so-called treatment principle of supplementing what is lacking. Secondly, supplementation of the spleen and stomach of the child, based on vitamin supplementation, can help better absorption of vitamins, such as the timely application of drugs such as Yu Ping Feng granules or Isokong San, which can adjust the spleen and stomach function of the child, so that the symptoms of vitamin deficiency can be better corrected.