Asthma is a common disease worldwide, the prevalence of adults around the world more than one over ten [1], the prevalence in children is higher than that of a third, and the prevalence is on the rise, especially children asthma has become a global concern of the public health problems [2].

Infant asthma is a common disease and frequently encountered disease in pediatrics, have disease urgent, accompanied by expiratory wheezing, cough and gasp the and so on, the cause is relatively complex, once the onset, easy to cause a variety of complications, severe cases may even lead to illness children [3].

Asthma is common clinical symptom of infants and young children period, multiple from 0 to 3 years old. Corticosteroids and bronchodilator in the treatment of asthma, such as ß2 agonists is a global initiative of asthma, or GINA [2] the recommended treatment. In recent years, magnesium sulfate become another trend for the treatment of asthma.

From November 2014 to November 2015, on the basis of routine comprehensive treatment through intravenous magnesium sulfate and oral montelukast sodium chewable tablets to treat 66 cases of childhood asthma acute attack, effect is good,