Background: Psycho- Educational Program is an important strategy for empowering adolescents' parents with essential knowledge, skills, and strategies for better coping. Adolescents' parents' preparation is a crucial aspect for providing safe shelter to pass adolescents safely and smoothly. Aim: This study aimed to evaluate the effect psycho- educational program on enhancing attachment and psychological wellbeing among adolescents' parents. Design: A quasi-experimental research design was used to conduct the current study. Setting: This study was conducted at El Marg governmental preparatory schools. Subject: A convenient sample of 202 adolescents' parents. Three tools were utilized 1) Socio-demographic interview sheet, 2) Revised inventory of parent Adolescent Attachment and 3) psychological wellbeing Scale. Results: The results showed that there was a high statistically significant enhancement in adolescents' parent attachment and psychological wellbeing for study group observed at post psycho - educational program implementation compared to pre-psycho-educational program. There was strong positive relation between total the levels of attachment and of the studied adolescents' parent in study group and their levels of psychological wellbeing. Conclusions: The findings confirmed psycho- educational program enhanced attachment and psychological wellbeing among adolescents' parents, as parents who participate in psycho- education program had better outcomes on their posttest, and there was significant positive relation between parent attachment and psychological wellbeing at post implementing of psycho- educational program. Recommendations: Periodical assessment of adolescents' parents' attachment and psychological wellbeing should be done regularly for early detection and develop training programs to improve their attachment levels and enhance their psychological wellbeing.