The preservation of Islam from the deviations at the beginning of Islam and throughout history is due to the sacrifice of Imam Hussain (AS). The capacities available in the uprising of Imam Hussain (a.s.) have made it possible to hold the mourning ceremony of Imam Hussain (a.s.) every year after thousands and hundreds of years. Of course, religious education is provided in this ceremony to close the way of deviations as much as possible. It is a pity that sometimes these gatherings, which are held in the name of mourning for Imam Hussain (peace be upon him), are also distorted and plagued. The upcoming research, which has been conducted using library sources and descriptive methods, has dealt with the pathology of mourning ceremonies with an emphasis on Iranian society. Investigations based on religious sources show the existence or causes of some deviations, such as: giving authenticity to feelings, paying little attention to knowing the message and life of Imam Hussain (AS), and distorting the purpose of the uprising of Imam (AS). , lying, exaggerating some events, raising offensive topics, using a machete, using inappropriate styles of mourning, paying attention to the financial aspects of mourning gatherings, and spreading superstitions.