1. Allied occupation policy: After World War II, the Allies took a series of measures to rebuild Japan, including organizing economic reforms, disbanding the army, and promoting the process of democratization. These policies helped Japan get rid of the shadow of war and laid the foundation for rapid economic recovery.

2. Rebuilding the industrial base: Japan suffered great damage during World War II, and many cities and industrial facilities were destroyed. However, the Japanese government actively invested funds and resources to rebuild the industrial base, which accelerated the economic recovery. Especially in the fields of steel, automobile, electronics and chemical industry.

3. Market-oriented economic reform: The Japanese government adopted a market-oriented economic policy after the war to encourage enterprises to compete and innovate freely. By opening up trade and reducing tariffs and other trade barriers, Japanese enterprises can enter the global market more easily and expand their exports rapidly. In addition, the government also provides a large number of loans and tax incentives to support enterprise development.

4. education and skills training: the Japanese government increased its investment in education and skills training after the war, and trained a large number of high-quality laborers. This gives Japanese enterprises a competitive advantage and can provide high-quality products and technologies in the world market.

5. Continuous innovation and R&D: Japanese enterprises attached importance to scientific and technological innovation and R&D after World War II, and actively invested funds and resources. They quickly integrated into the forefront of global science and technology, and made major breakthroughs and progress in the fields of automobiles, electronics and machinery.

6. Strong work discipline and organizational ability: Japanese enterprises pay attention to cultivating work discipline, efficient organization and effective production management after the war. This kind of work spirit and organizational ability has become an important support for the rapid development of Japanese enterprises.

to sum up, the allied occupation policy, industrial base reconstruction, market-oriented economic reform, education and skills training, continuous innovation and research and development, and strong work discipline and organizational ability all contributed to the rapid rise of Japan's economy after World War II.