对昆明市城区精神发育迟滞儿童进行研究。用单因素的配对计数分析和成组资料分析筛选出本病的危险因素有出生时窒息、母亲孕期使用违禁药、高热惊厥、脑震荡、父母婚姻关系、入托儿所、出生后患病、喂养方式、家庭人均收入、母亲晚婚年龄、独生子。用回归分析筛选出的主要危险因素有母亲孕期使用违禁药、出生时窒息、出生后患病、入托儿所及家庭人均收入。 Kunming city mental retardation children study. The single factor paired count analysis and group data screening out the risk factors of the disease are asphyxia at birth, the mother used illicit drugs during pregnancy, febrile seizures, concussion, parental marital relationship, nursery, sick after birth, feeding , Per capita income of the family, mother’s late marriage age, only child. The main risk factors screened by regression analysis included the use of illicit drugs during pregnancy, suffocation at birth, illness after birth, per capita income of nurseries and families.