Psychological flexibility is the basis of mental health. Parents’ psychological flexibility and
parental psychological flexibility will affect the emotional and social development and physical health of
children and adolescents. Parenting styles, family functions, and parent-child relationships may mediate
the association between parents’ psychological flexibility and child and adolescent development. Through
the intervention and training of Acceptance Commitment Therapy (ACT) and mindful parenting, parents’
psychological flexibility has been significantly improved, thereby improving parents’ parenting behaviors
and having a positive impact on the development of children and adolescents. Future research can explore
the impact on the cognitive development of children and adolescents, the other mechanism, and effects of
intervention or training in different types of families.