Abstract:OBJECTIVE To understand the situation of health knowledge and risk factors of COPD residents in Haikou, and to provide theoretical basis for the implementation of COPD health education and scientific prevention. METHODS A self-designed questionnaire was used to conduct a questionnaire survey among 1000 residents in some districts of Haikou. RESULTS Among the residents of Haikou, the residents with different per capita monthly income have statistical significance for the cognitive differences in COPD risk factors and non-risk factors. The cognitive differences in the risk factors of different types of COPD were statistically significant for the residents of different age of smoke. The cognitive difference measures to prevent COPD of different age, smoking age residents were statistically significant, especially, in cognition and age less than 1 years and the smoke is more than 5 years group of preventive measures for COPD. With regard to the needs of COPD health knowledge, the results of the survey showed that 27.44% of the residents were most likely to understand the cause of the disease, followed by the control of the disease (19.11%). 14.43% or 11.99% of residents wanted to know about relapse prevention and pulmonary rehabilitation exercise. Reading health publicity materials (47.88%) is the primary choice for residents, followed by one to one explanation (23.79%). CONCLUSION Relevant departments should strengthen the COPD health education for Haikou residents, especially for people of different age, smoking age, per capita monthly income, and can use the community as the unit to regularly distribute the health brochures, one to one explanation or other more forms, in order to enhance the cognition level of COPD residents' health knowledge and risk factors in Haikou. The autonomy of the residents will reduce the contact with the risk factors of COPD, which will help to reduce the incidence of COPD and thus save medical resources.