《廿二史札记》是清代著名的史考专著 ,它以其鲜明的经世致用特色流传于世。本文从观盛衰、明教训、察外国、索规律等几个方面 ,以最明显的史实阐释其经世致用的特点。这也是赵氏《廿二史札记》一书独树一帜的特色 “Twenty-two Historical Notes” is a famous history of Qing Dynasty monographs, with its distinctive characteristics of the popular use of the world handed down. This article explains the characteristics of its practical use in the most obvious historical facts from the perspectives of prospering, learning the lessons, observing foreign countries, and enforcing laws. This is also Zhao’s “Twenty-two Historical Notes” a book unique characteristics