The peer foster student innovation program is the latest idea program from the regional government of Banyuwangi Regency that is applied in all schools in Banyuwangi Regency including one of the SMPN l Genteng of Banyuwangi Regency. The purpose of this research is to find out whether there is an increase in communication or not between learners when peer foster student innovation programs are applied starting at the stage of planning, organizing, implementation to the evaluation stage. The method that researchers use is a qualitative approach with this type of case study research by applying qualitative research procedures and assisted by the NVivo analysis engine. The results of the study mentioned the increase in communication between learners with the results of measures that have been analyzed by researchers. The highest result with a large percentage of 39% is the type of interpersonal communication of learners.