In the early 15(superscript th) century, a new classic trend of literature became prevalent. Though renowned as the most remarkable writers of this trend, Li Mengyang and He Jingming had many differences in their literary and philosophical thoughts. Da Fu Lun can be regarded the collection of his ideas about philosophy. This article aims to review the philosophical thoughts in this book, and to compare it to Kong Tong Zi, Li Mengyang's collection of philosophical ideas.