How to cure wheezing problems in a 10 yr old child, who seems to need ventolin every winter?

Stepwise treatment. An evaluation for mild asthma would be helpful with addition of a low dose inhaled corticosteroid medication. Generally these types of conditions can be easily controlled but not necessarily cured but with some monitoring of the condition usually excellent results can be achieved. Some will improve with age. A dust free environment especially where the child sleeps can help.
Control measures. If your child's asthma is triggered by cold air, warming the air that he is breathing by covering his nose /mouth with a scarf can alleviate the wheezing. Viral illnesses such as the flu are more common during the winter and unless your physician recommends otherwise, the flu vaccination should be given each year. For symptoms not well controlled by ventolin inhaler, an inhaled steroid may be use.