维生素D是维持机体正常功能所必须一类脂溶性维生素,维生素D的缺乏在全世界范围内非常普遍,已成为公共卫生问题[1],维生素D缺乏不仅可使小儿患佝偻病,而且还与心血管疾病、呼吸系统疾病、自身免疫性疾病、肾脏、精神疾病等密切相关[2]。合理补充维生素D,对维持体内维生素D水平有重要意义。由于维生素D的应用在不同人群都存在不合理情况,为了解铜陵市婴儿维生素D服用情况,促进维生素D的合理服用,本文对铜陵市 Vitamin D is a kind of fat-soluble vitamins necessary to maintain the normal function of the body. The lack of vitamin D is very common throughout the world and has become a public health issue [1]. Vitamin D deficiency can not only make children suffer from rickets, but also with heart Vascular disease, respiratory disease, autoimmune diseases, kidney, mental illness are closely related [2]. Rational vitamin D supplementation is important for maintaining vitamin D levels in the body. Due to the application of vitamin D in different populations there is unreasonable situation, in order to understand the situation of infant vitamin D in Tongling City, to promote the rational use of vitamin D, Tongling City