The article is an attempt to create a new definition of ethnopolitics. On the basis of analyses of the researchers, such as J. Rothschild, A. Wierzbicki or T. Bodio, who had dealt with this issue for years, the author comes to such an observation: ethnopolitics is a system in which the most essential things are ethnic relations, which take place in social-political processes and influence the political power, ideas, legal norms, party and institutions activity and support the development of the harmonious ethnic relations in multiethnic nation on the basis of equality. He emphasizes the fact, that in the case of nations in which ethnic factor has deciding significance, ethnopolitics has crucial meaning in functionality of the whole country.