Researchers presented the results Tuesday at the American Thoracic Society's Annual meeting in San Diego.
Researchers from the National Institute of Public Health and Environment in the Netherlands followed more than 4,000 children from birth to 8 years of age.
And researchers found that the risk of asthma is 65% higher in children with overweight mothers and if one or both parents have a history of asthma.
The head researcher says inflammation could be the common factor between the conditions because obesity can trigger inflammation and inflammation has been linked to asthma.
Some 20 million American have asthma, half of them are children. And 5,000 Americans die each year from the disease.