The Book of Good Love (1330 and 1343), also called the Archpriest's book or book of songs, since existing manuscripts do not provide a title, is a work of the 14th century clergy messter. It is an extensive composition, composed of more than 1700 stanzas of varied character, whose main thread is the story of the author's fictional autobiography (Juan Ruiz, Archpriest of Hita). It is considered one of the Spanish literary summits of any time, and not only of the Middle Ages.

The book contains a heterogeneous collection of diverse materials united around a pretended autobiographical narration of love affairs of the author himself, who is represented in a part of the book by the episodic character of Don Melón de la Huerta. In it, all the layers of late medieval Spanish society are represented through their lovers.