Social interaction in the community, causes some impacts, among others, the occurrence of assimilation. there are some forms which can be studied futher, namerly: cooperatin (co-operation), competition (competition), conflict (conflict), accommodation (accommodation) and assimilation (assimilation). positive socialinteraction will create a join venture (cooperation) that can facilitate the occurrence of assimilation. in particular, the following article will discuss the concept of assimilation of the ethnically different from married spouses in depok, one of the original native depok (husband of wife) while others are ethnic immigrants wandering and domiciled in depok.