School lessons basicly social knowledge reputed boring because teachers extend lessons with speech methode refers text of the books is used, because of that, this problem is need to solution so that this lesson can be plesured by students. Problem solving methode is one of solution for eliminiting this problem, this methode makes meaningfull learning. It is a process to connecting a new information with relevant consept in their cognitive. Result of research shows: problem solving methode influences knowledges as a result of study and student's interest to the sosiology lesson with simultants. Kata Kunci: Problem solving method, knowledge as result of study, student's interest to the sosiology lesso