Any country has a group of people that most of them believe in a special religion and some others believe in other religions. Those who believe in other religions are called religious minorities,and they own some rights within the framework of human laws and especially within the framework of the rights of the minorities which the system of that country should respect them. An Islamic country regarding the religious minorities of within its system,who are the followers of the other religions,concludes a mutual coexistence contract.This contract notwithstanding some advantages includes some disadvantages too.In order to prevent the probable challenges,obeying such contracts, both for the Islamic society and the minorities is necessary.