竞争法是市场经济条件下国家干预和调节宏观经济和微观经济活动的重要工具。本文考察美国、德国、日本竞争法的历史发展和现实状况及未来发展趋势，比较分析了三国竞争法的异同点；就其可供借鉴的成功经验，以及建设有中国特色的竞争政策和竞争法规，提出了自己的见解。 Competition law is an important tool for the state to intervene and regulate macroeconomic and microeconomic activities in a market economy. This article examines the history, reality and future trends of the competition law of the United States, Germany and Japan, and compares and analyzes the similarities and differences between the competition laws of the three countries. Based on the successful experiences that it can learn from, as well as the construction of competition policy and competition laws with Chinese characteristics , Put forward their own views.