Families worldwide have been undergoing rapid changes with macro, social and economic trends. Demographic shifts, economic upheavals, changing societal norms and values, immigration across national borders and migration within nations are creating new and altered structures, processes and relationships within families. The increasingly complex and diverse family structure contributes to concerns regarding the well-being of families in Hong Kong, including their health, happiness and harmony (FAMILY 3Hs). Family life and health education should be strengthened to meet the increasing needs of promoting healthy lifestyle among Hong Kong families.