There were 67.1% of mothers had sufficient knowledge of pneumonia definition, 57.6% of mothers had sufficient knowledge of causes of pneumonia, 54.8% of mothers had sufficient knowledge of risk factors of pneumonia, 71.9% of mothers had sufficient knowledge of pneumonia harmful influences, 63.8% of mother had sufficient knowledge of preventing pneumonia, 54.8% of mothers had sufficient knowledge of giving interventions when children had pneumonia.