What needs to be mastered is the positive and negative effects of each part. For the world, promoting world peace and maintaining peace and prosperity in the Asia-Pacific region. The negative impact on the world is that hegemonism still exists and world peace still needs efforts. The good news for the United States is that people's living safety has been stabilized and the national treasury expenditure has also declined. On the other hand, a large number of workers are laid off and unemployed, and the domestic development after the war needs great efforts to control. The positive side of Vietnam is the end of the war. It is true that North Vietnam won and then unified. The negative side is that the economic measures taken afterwards still cannot recover the heavy losses caused by the war and the gross national product has declined.