Yellow headed Buddhism began to enter into Mongolia from Tibet the second half of the 16 th century. Since that time mostly Mongolians believe Buddhism. But Mongolian Buddhism is different from Tibetan Buddhism. Mongolian Buddhism connected with Mongolian traditional lifestyle. Before in 1930 40% of male population was lamas (monks). Between the communist purges 1930-1940 Russian and Mongolian soldiers destroyed about 700 monasteries and temples. Until in 1990 any religion closed in Mongolia. After democratic movement in 1990 all religion reopened. In 2002, there are about 180 religious temples and churches operating in Mongolia and more than 110 Buddhist monasteries and temples and about 70 Christian churches in Mongolia .

Buddhism: Buddhism in the form of the yellow hat Buddhism or Lamaism making further inroads into Mongolia from the second half of the 16 th century. According to the Mongolia Buddhist doctrine, it is said that the sky father blessed all of the world and that there is one who could say, I am a owner of the world' Buddhism teaches the 'nature of reason' and that if good deeds are done, they will have good results. Similarly if bad deeds are done, they will have bad results. Buddhism preaches about these as 'ten black deed sins' and 'ten white deeds'. Sins are divided into deeds which are made with the body with speech or with the mind through thoughts. Sins made with thoughts include thinking about bad things having evil thoughts, corruption, intentionally or purposely doing a crime, planning aggressive war, and so forth.

It is said that Buddhism believes that thought is thing prior to both body and speech. They consider evil thoughts the result of numerous sufferings and unavoidable accidents and misfortune. The term used for such negative feelings is Nirvanas (greed, anger, opposed, ideology). Buddhism argues that if we can systematically remove these strong desires or greed from the mind we can become wholly enlightened people. With enlightenment, thoughts will become pure and clean and reach to the height of bliss.

Buddhism also teaches that if the people show their mercy in letting an animal live, they will gain merit in their future lives.