The purpose of the bidding system is to realize an open, fair and just market competition mechanism. It is found from the investigation of foreign countries that bid-rigging is generally considered to be a monopoly agreement that restricts competition and should be regulated under the framework of anti-monopoly law. However, in the principle of collusive bidding regulations, countries have shown differences, which are mainly manifested in the reasonable principle and self-illegal principle of the United States and the European Union, and the quasi-of-course illegality principle of Japan. Under different regulatory principles, countries have formulated forgiveness systems, legislative systems, and sanctions systems that suit their national conditions. China can reasonably draw lessons from the experience of foreign anti-monopoly law in regulating bid-rigging behavior, so as to make adaptive adjustments to the identification of anti-monopoly agreement, the improvement of the forgiveness system and the construction of legal liability system for bid-rigging behavior.