Background: Adolescents' parent's attachment has an essential role in developing adolescents' parent psychological wellbeing and mental health, which is considered one of the protective factors that participate in the smooth transition of adolescents from childhood to adulthood. Aim: The current study aimed to assess of adolescents' parent attachment at preparatory schools. Research design: A descriptive exploratory research design was utilized in this study. Setting: The study was conducted in three governmental preparatory schools in El Marg Governorate. Subject: A convenient sample for (202) adolescents' parents. Two Tools: utilized for data collection: 1) Socio-demographic interview sheet and 2) Revised inventory of parent Adolescent Attachment. Results: the study showed that 42.6% of the studied adolescents' parents had low attachment to their adolescents followed by 37.6% had medium attachment 19.8% had high attachment. Conclusion: It is concluded that near to half of the studied adolescents' parents had low attachment to their adolescents followed by more than one third had medium attachment and less than one fifth had high attachment. The study Recommended the application of the study results in implementing an awareness program for adolescences' parents to rise their awareness about the significance of secure parent adolescent attachment.