For the symptoms of frequent nosebleeds in 4-week-old children, the following measures can be used to treat. First of all, supplement vitamin C. The reason why some children bleed frequently is related to the dryness of the nasal cavity and the lack of vitamin C in the body. At this time, you can give children apply vitamin C effervescent tablets, and usually drink more warm water, eat more green vegetables and fruits. Secondly, children with thrombocytopenic purpura caused by nosebleeds. At this time, we should apply glucocorticosteroid treatment for children, such as the application of prednisone, prednisone can effectively inhibit the children’s own strong immune response, so as to reduce the destruction of platelets.