At the beginning the linguistic meaning of hypocrisy is examined then hypocrisy is defined as a religious concept. After that the relationship between hypocrisy and some basic religious concepts like faith, kufr, fisq and shirk are defined. Also different types of nifaq is explained. Later in the article emotional, intellectual and moral structure of munafiq (hypocrite) and their behavior, the character of munafiq is social and religious life are explained.