Asthma is one of the most common acute and chronic conditions in children, and the pediatricians are expected to provide an important role for asthma care in this age group, however there is no published information describing the different aspects of their practices about children asthma in Iran. This study was done to characterize the knowledge of the Iranian pediatricians about the diagnosis, treatment and education of asthma in children. Validated questionnaires were completed by 193 pediatricians from different parts of Iran during the International Congress of Pediatrics in Tehran. A total of 193 returned questionnaires (96.5%) were eligible for the survey and analysis. About 49% of the respondents were male and 18% were sub-specialists. Wheezing was the most common mentioned symptoms in taking asthma into consideration. About 40% of these physicians had no plan for doing spirometry in eligible children and 35.2% of them did not have familiarity with peak flowmeter. Also about 17.6% of them paid no regular visits to their asthmatic patients. Only 29% of the respondents indicated that they would prescribe inhaled corticosteroids for a 6-year-old child with moderate persistent asthma and 73.3% of them would prescribe inhaled bronchodilator (Salbutamol) for an acute asthmatic attack as the first drug, while 17.1% of them used epinephrine injection for this purpose. About 42.2% of the respondents did not consider any education or action plan for their patients and only 60.6% of them had access to standard guidelines and educational programs. The results show that there are numerous aspects of children asthma management in Iran which are not consistent with standardized guidelines and recommendations. This survey and the attained information suggest areas for interventions to improve the pediatricians' knowledge about asthma and the disease management.