Background: Bronchial asthma is a highly prevalent chronic respiratory disease that affects over 300 million persons worldwide with a mortality rate of approximately 250,000 annually. Instructing asthma patients about their illness is significant and the principle accentuation is to build patients' information and to elevate patients' adherence to medication plans. The absence of data about self-management had prompted reluctance of asthmatic patients to disease management activities. Objective: To improve bronchial asthma control in asthmatic patients. This study arranged and executed the bronchial asthma instructive program and assessed and elevated the level of information about asthma self-management strategy of inhaler use and asthma control after training program among adult asthmatic patients. Patients and Methods: An intervention study was conducted on 97 asthmatic patients attended Chest Hospital at Menoufia Governorate. All studied patients were evaluated through four questionnaires titled sociodemographic characteristics, Asthma Self-Management Questionnaire (ASMQ), GINA-2017 criteria of asthma control and a checklist to assess technique of inhaler use. All participants were subjected to health education program. Results: The results revealed that there was a statistically significant difference between patients' knowledge of asthma self-management, accuracy of inhaler use technique and asthma control before and after the educational program where P < 0.001. Conclusion: Based upon the results of this study, it could be concluded that implementation of educational program had a positive effect on improvement of the patients' knowledge, practices and self-care strategies post program implementation compared to pre-program implementation.