The purpose of the Asthma Society is to provide information, advice and reassurance to people with asthma and their families, to act as advocate / representative for them, and to promote awareness and understanding of the condition amongst the general public. The Society is working towards a situation where people with asthma can realise their full potential, and not be at a disadvantage health-wise, socially or financially.

The Society's primary role is that of information-giver and educator. It also has a role in advocacy and in representing its members' interests in policy-making forums at national level.