Various Turkish communities in the history had adopted several religions in accordance with the environments that they were in and this situation had caused negative effects over the Turkish tribes excluding the religion of Islam. Although the Asian Huns did not have any relation with Buddhism and the European Huns did not have any relation with the Christianity, Tabgaç people who had establish a state in China had become Chinese people as a result of the prohibition of the "national" elements under the influence of Buddhism since the year of 495. However, Tabgaç people had been the builders of the "Wei" art that was a new era opened in the Buddhist arts (Yung-kang and Long-men Buddha statues).
Although the Buddhist priest Hiuen-Tsang identified the entire Western Gokturk art as the country of Buddhism in the period of Gokturk State, it has been known that the Turkish people had resisted against this religion and Buddhism as rejected by the 2nd Gokturk State. However, in the period of Uighur people, Manichaeism was adopted among the Turks and it became established in the period of the Uighur people that established dominion in Turkestan. Gokturk alphabet was changed, and the Uighur script was used that had the Sogd origin and entirely different characteristics. Then, it is required to consider the history of Uighur people in relation with settlement in this region where Buddhism was dominant as a religion.
Uighur people had succeeded in becoming the best representatives of this culture. They had a rich religious literature that was composed of the translations of the Manichaeist and Buddhist works into Uighur language. Some of these works were found in Bin-Buddha cove temples in the form of the bound books with pictures in them. One of the interesting books was Irk-bitig that was the book of prophecy written with the Gokturk alphabet in the beginning of the 10th century. The most significant books include the work titled as Huastuanift written in the Uighur alphabet and the translated version of Hiuen-Tsang that was titled as Altin Yaruk (=Altın Işık= Golden Light) translated into Uighur language by the translator, Beşbalıklı Turk Singku Seli Tutung (in the first quarter of the 10th century).
The hymns written with the syllabic meter, the wall pictures and the statues that were found as a result of the excavations carried out by various European scientists in the centres such as Beş-balık, Turfan, Kaşarlar, Aksu, Yarkent, etc. and in the capital city of Idi-kut that was called as the "desert Pompeii" and the sites such as Toyuk, Mortuk, and Bezeklik between the years of 1894-1914, etc.
Some of the Turks had adopted the religions of Hebraism (Khazar people) and Christianity. These foreign religions did not display a negative effect in the places with the majority of the Turkish population. However, in the regions that lacked this opportunity of majority, it caused the assimilation of the Turks (Khazar, Pecenek, Uz, and Kuman people in the Eastern Europe and Balkans). It also resulted with the lost of the Turkish identity pertaining to the Bulgarians that adopted the Orthodoxy since the year of 1000. Only the religion of Islam was in the state of a religion that reinforced the Turkish identity of the Turks since it had some similarities with the ancient beliefs of the Turks in some respects.