The book "The Lay of the Cid" is an epic poem written by an unknown anonymous author in the 12th century. It reflects the life story of the great hero Rodrigo Diaz de Vivar, better known as Cid, a legendary Spanish knight in the service of the kings of Castile in the 11th century. The poem "Song of the Kid" is an elegant work that tells about the exploits and exploits of the Kid, his battles and victories. It conveys the complex relationship between knights and rulers, traditions and moral values of medieval Spanish culture. The author of the epic reveals the character of Chid as a strong, brave and faithful knight who defends his honor and dignity under any circumstances. "The Kid's Song" is filled with many heroic feelings, devotion and loyalty, imbued with the traditions of knightly etiquette. This book not only broadens the understanding of the Spanish literature of the Middle Ages, but also gives an opportunity to delve into the world of chivalric traditions, morals and faith.