Abstract
Objective : The health care systems complexity ,therapeutic approaches development, and the advancement of science and technology create new requirements for patient safety and clinical risk management.

Methods : The terms of inclusion, terms of exclusion and keywords were used for the collection of courses, reviews and studies on critical incident reporting system on the official website.
After having a relevant studies we give a full description of every single information Then the informations are divided into different categories based on their main statements, and a small conclusion is given.
Results : There is a very important relationship between critical incident reporting system in hospitals and patient safety even though the quantity relation between patient safety and CIRS is unclear until now.
Conclusions : As a quick suggestion , hospitals and other medical organizations are encouraged the adoption of critical incident reporting system. However a lot of studies have been described like the quantity relation between CIRS and patient safety or the improvement between critical incident reporting system and risk management and methods to show us how to react with them, Strengthened power-based study can help answer open-ended questions related to critical incident reporting system.