This paper attempts to explore the small encyclopedia “Yahangchuan(夜航船)” from the perspective of a new style of Leishu(類書) that reflects the changed reading habits of writers and readers. The title of this book, “Yahangchuan(夜航船)” has long served as a social discourse center through travel. The author provided the reader with a keyword that could be a social issue, that is, the essential knowledge that must be known at that time. This book is the fruit of knowledge and data collected by Zhang Dai as a literary man, and is an encyclopedia written for knowledge that can be used in daily life. “Yahangchuan(夜航船)” can be said to be a differentiated Leishu(類書) that shows the purpose of acquiring knowledge for a specific class, the convenience of collecting knowledge that can be used immediately, and excellent editing skills.