United States is a developed country and has long been at the forefront of cutting-edge technological innovation. Therefore, its various policies have certain reference significance. This paper mainly studies the innovation policy of the United States and introduces the multiple level of innovation system in the United States from three aspects: history, importance, and policy content. Mainly focusing on the policy content, this paper analyzes the advantages and disadvantages of the United

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... s under the innovation policy from multiple angles, combined with its environmental factors. The policy content mainly includes five aspects: subsidy policy for infant enterprises and small and mediumsized enterprises, STI policy, immigration, and talent flow, stimulating technological and energy innovation and establishing intellectual property right. The research shows that the United States attaches great importance to innovation policy, which is fully reflected in the comprehensiveness of covering multiple fields and the appropriateness of adapting to the social environment. This has a great inspiration for the establishment of innovation policies in other countries.