Materials and method: Interview randomly 120 patients who are over 10 years old and have been examined and treated for at least 2 weeks in the Respiratory Care Center - University Medical Center Ho Chi Minh City, in the questionnaire consists of 3 parts: Part 1: demographic characteristics, administrative: age, gender, weight, height; Part 2: The questions on the knowledge of asthma patients; and Part 3: The questions on the attitudes of asthmatics.