Asthma, a reversible and curable disease. Mostly the prevalence of asthma in the developing countries are very high. eventhough governments and NGO's are spreading awareness among the people through stage shows and in canopy setups, still the awareness level is not up to the mark.this review article, clearly defines about the asthma and its trigger factors, types of asthma in a detailed manner. Diagnosis of asthma like physical examinations and lung function tests, route of administration plays a major role in asthma. The beneficial of inhalation is compared with the other routes. Treatment is widely distributed with some class of drug in asthma. Mainly β2 agonists and inhaled corticosteroids are important. Some people practicing herbal medications all these are indicated in detail. GINA guidelines suggested regarding the step up and step down medications to be followed in asthma. In addition to this so many drug makers enrolled their presence in the market but still some companies are playing vital role in this sectors and mentioned in this article also.