Disinformation is a kind of false information which is deliberately spread and may mislead our decision-making. It is a major difficulty and pain point in tackling disinformation in network for various countries at present. The European Union has made a lot of exploration and accumulated rich practical experience in tackling disinformation which is of great significance enlightenment for China. Using the method of network survey, this paper analyzed the principles, strategies, and actions of European Union to disinformation. It is found that the actions taken by   European Union are based on its inherent democratic political system and social cultural environment and formed a unique model. Although certain achievements have been obtained, but there are also limitations. We should give full consideration to the reality of China and make clear our position and solutions to disinformation on the basis of drawing lessons from its beneficial experience.