It is known that in the first half of the XIII century, with the entry of the Kazakh steppe into the ulus of Jochi, a new state stage began. The Golden Horde state, which occupied a leading place in the history of Eurasia as one of the largest States, was called the ulus of Jochi in medieval sources. The Golden Horde became a harbinger not only of military power, but also of culture and civilization. Undoubtedly, one of the peaks of this cultural development is the heroic poem. Through the poem of heroes, we can learn the undisclosed pages of everyday life and real life of that era. The article assesses the source value of the heroic poem that originated In the ulus of Jochi, and defines the author's approach.