In response to President Xi Jinping's "Belt and Road" initiative, it is crucial to enhance relationships with neighboring trade partners, especially Japan, to further promote the healthy development of the global economy and build a community with a shared future for mankind. Despite the profound impact of World War II on Sino-Japanese relations, the trade ties between China and Japan have become increasingly close since the reform and opening up, demonstrating the potential and necessity for cooperation between the two countries. Therefore, this paper will utilize the Uncertainty Avoidance Dimension from Hofstede's Cultural Dimensions Theory to analyze the cultural differences in time management between China and Japan. Through this analysis, the paper aims to explore how to optimize communication between Chinese and Japanese enterprises, improve work efficiency, and eliminate cultural misunderstandings, thereby fostering the deepening of Sino-Japanese relations.