【Objective】 To analyze the environmental factors that might affect chronic cough in children,especially those living environment for the etiology of chronic cough in children and to provide intervention clues. 【Methods】 October 2006~April 2011,3~14 years children diagrosed chronic cough(observer group 102 cases,control group of 143 cases),basic materials included respiratory infections family tobacco exposure,an allergy per capita dwelling space,indoor decoration and indoor pets,planting flowers were collected to analyze. 【Results】 After the intervention,children cough frequency changes had taken place,observer group decreased significantly,with were differences obvious of two group (χ²=13.05,P<0.01).Logistic regression analysis showed:respiratory infection family of tobacco exposure,indoor decoration too,indoor pets as the major factors influencing chronic cough in children. 【Conclusion】 For children with chronic cough,we should increase the prevention of respiratory tract infection,avoid indoor tobacco exposure,control room excessive decoration and indoor pets sparingly.