Orkhon and Yenisey is the first written works known to the modern world in the common Turkish language of Turk. These are ancient inscriptions found in the river basin (VI-VI-II centuries). Also, these writings are not written by any other nation, but by the Turks' own alphabet. In the 90s of the 19th century, it was deciphered by the Danish scientist V. Thomsen; a little later these ancient writings, read repeatedly by the Russian scientist V.Radlov, are known by different author names. : Orkhon-Yenisey monument, Orkhon-Yenisey library, Orkhon-Yenisey inscription old Turkish script, ancient Turkic runic script, etc. With the reading of this book, a new stage in the history of Turkish history and the ancient Turkish language will be found. It is still starting. The most extensive studies were conducted in the fields of language and history.