We aim to develop a positive environment for family wellness through delivering positive messages, diverse activities and community-based projects to promote FAMILY Health, Happiness, and Harmony (3Hs) in Hong Kong. At the macro level, we aim to bring social and system changes (e.g. promoting family-friendly legislation and policies). At the micro level, we aim to promote healthy lifestyles with more 0-1 and 3-E Exercise (Zero-time, Negative-time and Minimal-time; enjoyable, easy and effective); 3-M．3-L healthy diets (more fruits, vegetables and fibre; less sugar, salt and fat), and 3-P living attitude (Positive Psychology, Positive family relationship and Positive communication), so as to achieve Family Holistic Health. We adopt an integrated community-based approach including formative research, building capacity, and developing and evaluating social marketing campaigns/interventions to promote family and societal Health, Happiness and Harmony (3Hs).