Abstract: Based on the excavation and sorting of a batch of English materials, this paper combines forestry exchange between Sino-USA in the first half of the 20th century, from aspects of government, society to scholars, from education and scientific research to disaster relief and disaster prevention, from forestry talents, technology, ideology, and forestry administrative organizations to afforestation, prevention of soil erosion, and river flood control. The study believes that because China’s modern forestry is introduced from the West, the exchanges between the two sides are asymmetric. China is more to learn from the United States, and the United States has used Chinese lesson as a guide to the domestic government and society. In turn it appealed to the emphasis on forestry and the development of forestry science to provide disaster relief and disaster prevention propaganda tools for China. This is a feature of forestry science that differs from other disciplines in the process of modern Sino-West exchanges.