Background: Merapi eruption can cause tremendous damage, not only physically but also mentally which will trigger the emergence of mental disorders in adolescence and even into adulthood. After the eruption of Merapi, adolescents and their families should move from shelters to permanent residence. Resettlement to permanent residence had resulted in a new variety of stressors. The new stressors would affect the release of LH (luteinizing hormone) and FSH (follicle-stimulating hormone) which may affect the occurrence of menstrual disorders. Menstrual disorder might interfere with learning achievement in adolescence. Objective: To determine the relationship between psychosocial stressors with menstrual disorders in female junior high school students after the eruption of Merapi in Cangkringan Sleman Yogyakarta Method: This study is a observational with cross-sectional design and combined with a qualitative approach. Respondents in this research is class VII students who were menstruating in Cangkringan Sleman. Samplings method used was total sampling. The research instrument was a questionnaire psychosocial stressors (IPSP), menstrual disorder questionnaire (SPAF) and the behavioral aspects of the questionnaire. Datas were analysed using Chi-Square test by looking at the value of prevalence ratio and logistic regression at the significance level of p <0.05 with a confidence interval (CI) of 95%. Result and Discussion: There was a significant correlation between psychosocial stressors and menstrual disorders (OR; 6.47; CI = 1.436 to 29.165) Conclusion: Adolescents who experienced severe psychosocial stressors six times more likely to experience menstrual disorders compared to adolescents who experience mild psychosocial stressors Keywords: Psychosocial Stressors, menstrual disorders, post-eruption of Merapi, Youth,SMP. ABSTRAK Latar Belakang:Erupsi Merapi dapat menyebabkan kerusakan yang luar biasa, tidak hanya fisik tetapi juga mental yang akan memicu munculnya gangguan jiwa pada remaja bahkan sampai masa dewasa. Pasca erupsi Merapi, remaja dan keluarganya harus pindah dari huntara ke huntap. Perpindahan tempat tinggal ke huntap inilah yang mengakibatkan berbagai stresor-stresor baru.. Stresor baru tersebut akan mempengaruhi pelepasan LH (Luteinizing Hormone) dan FSH (follicle-stimulating hormone) yang dapat mempengaruhi terjadinya gangguan menstruasi. Masalah menstruasi jika tidak mendapatkan penanganan yang benar dapat mengganggu prestasi belajar remaja.