Starting from the historical evolution and current new situation of the competition game in the field of cyberspace between China and the United States，this paper analyzes and sorts out the theoretical definition，basic types，core motivations，relevant regulations，key cases and main effects of the global cyberspace competition game under the new situation. Based on this，this paper focuses on the new situations，new trends and new problems that may arise from the competition in the field of cyberspace between China and the United States，analyzes the impact of bilateral and multilateral relations on the competition in cyberspace，and predicts the key timings and crucial outstanding issues in the evolution of the competition game. Meanwhile，this paper investigates and analyzes major risks of the competition in the field of cyberspace between China and the United States，and provides reference for forward-looking strategic deployment and emergency response strategies.