The information of Mammadaga Shiraliyev's "Basics of Azerbaijani Dialectology" has been presented in the research. Accents and dialects of the Turkmen language are examined on sections such as "Phonetics", "Morphology", "Syntax" and "Lexika". Descriptive, comparative and historical-comparative methods have been widely used in this book for the first time. The materials of the Azerbaijanian accents and dialects were interpreted in connection with ancient Turkish monuments, modern Turkic languages and their dialects. The dialectical materials were derived from three sources: 1) The materials collected by the author personally were collected by Shusha and its villages (1938), surrounding villages of Baku and Baku (1939-1940), Nakhchivan city and Nehram village of Babek region (1941), Gazakh (1942), Ganja (1943) materials. 2) The works of separate authors are some of these works, some of which are protected as candidate dissertations and are kept in the library of the Azerbaijan State University in the form of manuscripts. The scientific researches of N.Sh.Ashmarin, M.Islamov, R. Rustamov, I.Hajiyev, B.Ibrahimov, K.Ramazanov, T.Hamzayev were involved. 3) Third source During 1945-1958, the expedition of the Literature and Language Institute named after Nizami of ASSR was organized by the Azerbaijan State University named after SM Kirov in Zagatala, Gakh, Sabirabad, Alibayramli, Nakhchivan, Ordubad, Alibayramli, Agstafa, Tovuz, Gazakh, Borchali, dialectological expedition from Shamakhi, Maraza and Ismayilli regions. In addition to other Turkic languages, it was asked to compare the Cyrus, Bashkir, Kazakh, Kyrgyz, Oirot languages.