In the article “The Checklist” written by Atul Gawande, the author introduces that how to apply the checklist to the ICU management. As the author explains, in some complex process suck as IC in the hospital, there are always some error actions in thousands of steps and that causes the surviving rate decreased. Later, the checklist was used. And nurses and doctors whose actions followed the checklist saved more people. And finally he got a conclusion that the checklist is widely used and saved a lot of people’s lives. And I think also the checklist can be used in development of software.