５岁以下儿童死亡率（Ｕ５ＭＲ）、婴儿死亡率（ＩＭＲ）是社会发展的综合指标。肺炎是５岁以下儿童死亡的主要原因。本文就勉县５岁以下儿童肺炎死亡进行十年对比，以了解肺炎死亡与儿童死亡率的关系以及影响儿童肺炎死亡的因素，寻找降低肺炎死亡的有效措施，进一步降低Ｕ５ The under-five mortality rate (U5MR) and the infant mortality rate (IMR) are comprehensive indicators of social development. Pneumonia is the leading cause of death among children under 5 years of age. In this paper, we compared the death of pneumonia in children under 5 years of age in Mian County for ten years to find out the relationship between pneumonia death and child mortality and the factors that affect the death of pneumonia in children, looking for effective measures to reduce the death of pneumonia and further reduce U5