This study aimed to investigate the relationship between attachments styles and life quality of secondary school adolescents. It is investigated whether attachment styles and quality of life differed among the groups (age, gender, family income level) formed on the basis of socio-demographic characteristics. Participants included 305 students enrolled in secondary several schools in Bahçelievler, Istanbul. While 182 of the particpants female, 123 of them were male. “Demographic İnformation Scale”, “Three Dimension Attachment Styles Scale” and “Life Quality Scale For Children” were used in order to identify personal information, attachment styles and life quality of the participants. In the study relational screening method, one of the quantitave research methods is used. For multiple comparion analyses, t test (for the comparion of two data sets) and F test (for the comparison of data sets more than two) were used. Tukey analysis were employed in order to find out whether the differences were meaningful. Moreover, Pearson correlation test was used to find out relationship between the variables. The results of the study showed that there was a positive relationship between secure attachment and physical, social, affective variables and school life quality. Moreover, negative relationship was found between avoidant attachment and physical, social, affective variables and school life quality. While there was a differentiation in the sub-dimensions of attachment style and quality of life according to the gender variable, according to the family income level variable, only difference in school life quality scores was determined. Suggestions were proposed on the basis of findings which were discussed with regard to relevant literature.