First Buddism religion was entered in Mongolia by Altan Khan of Tumed Mongolia in 1576. He invited Sodnomjamts the leader of Tibeten Religion and exalted him as a leader of all Yellow Buddism and honored as Dalai Lama. For the backwards Sodnomjamts was allowed him to gain all the titles of Khubilai Khan.
After that, The first Bogd Saint Zanabazar had been known as a main representative of Mongolian Yellow Religion. He made a lots of developments in Mongolian religion and changed religious wearing of lamas, reading , rules of conventions and the melodies to adapt in Mongolian harsh weather condition, geographic position, traditional customs and lifestyle. Finally he could made a Unique Mongolian Buddist religion.
Early in the 20th Century There were more than 115000 students were being studied in 750 monasteries in 80 villages of 4 Khalkh provinces. Later on, those monasteries developed to became main centers of trade, cervices and crafters and people started living here. Yellow Buddism of Mongolia was highly educated and developed from the period of Saint Zanabazar to Bogd Jibzundamba, specially on philosophy, horoscope, hospital, art culture, language study which helped to delight Mongolians.
In 1924, when Jibzundamba was died Government of People of Mongolia announced that “Bogd Jibzundamba will not reborn on the earth again and he went to the heaven forever”
In 1937, the great political repression began and arrested over 17,000 lamas and divided them into three classes. The high class, the head of the ranks and the masters of the monks were shot down, and the middle class or old lamas were imprisoned for up to 10 years. The lower class, young monks who are up to 20 years left their religion and destroyed every, idols, gods, intellectual values, and scriptures that people worshiped and burnt more than 800 monasteries.
2265 temple buildings were transferred to hospitals, schools, hand factories, administrative buildings and public organizations and collected 30.9 kg of gold, 5916 kg of silver, 1.6 kg of pearls, 233847 Mongolian Tugrik, and other items equivalent to 388,000 Monglian Tugrik and 27742 animals were taken and transferred to state fund.
Religious beliefs were closed in People’s of Republic Mongolia and the Council of Ministers decided to revive the activities of Gandan Monastery in 1944. But under the supervision of the MPRP.
In 1990, when Democratic Revolution was victory, Buddhism raised again and became free to believe in their religion.