The ability of each individual is not the same, especially in self-adjustment. This study, aimed at analyzing the effectiveness of group counseling services with Islamic Integrated Cognitive Behavior Therapy (IICBT), focused on improving the self-adjustment ability of new students at Agro Nuur El Falah Salatiga Islamic boarding school. The research approach used is quantitative with a quasi-experimental research design. The subjects studied were new students totaling 60 students. Based on the results of the Mann-Whitney Test, the experimental class and control class obtained a significance (2-tailed) of 0.002 <0.05. In conclusion, this study reaffirms that group counseling services with Islamic Integrated Cognitive Behavior Therapy are effective for improving the self-adjustment of new students of Agro Nuur El-Falah Salatiga Islamic boarding school.