Abstract: Since the 1990s, when Mongolia has transited to democracy and market economy, which began to reform all parts of society, corruption has become a serious issue. Though corruption does not trigger a fear like violent crimes, it is a very dangerous phenomenon that spreads all sectors of society in a hidden way, and there is no particular victim of corruption, but the society.Nowadays, the main obstacle to socio-economic growth in developing countries is corruption. Therefore, it is essential to know the nature, causes, characteristics, and structures of corruption in order to develop and implement an effective anti-corruption program.There is a need to fight against political and high-level corruption in Mongolia, as a country developing nation’s economy based on the mining sector. This article looks at the corruption situation in Mongolia, its factors, causes and methods, the results of surveys on anti-corruption activities in Mongolia, and the nation’s experience in fighting corruption.The article compares, summarizes and analyses studies the reports conducted by the Independent Authority Against Corruption of Mongolia, a nationwide survey on Perceptions and Knowledge of Corruption in Mongolia 2017, and other works of research institutions, and analysts.Corruption as a pressing issue of Mongolian society remains a cause for concern at both the administrative and elite levels paralyzing Mongolian decision making. The enforcement of anti-corruption policies is itself marred by corrupt practices and threats of mutual exposure.There is an increasing need to educate the public and to propagate the view of zero-tolerance for corruption and bribery throughout the society. Also it is essential to increase transparency in political activities, and the willingness of politicians in fighting against corruption.