The invention provides a gold-platinum alloy nano bipyramid frame, a preparation method and an application of the same. In comparison with the prior art, the one-step method provided by the invention is characterized in that a hollow frame structure is compounded; cumbersome steps are avoided; response time is short; reaction conditions are mild; and only simple equipment is needed. In addition, the compounded nano bipyramid frame has a stable structure; and a compounded sample does not change after being placed under normal temperatures for two months. The product has a dual-functional structure and can guide a catalytic reaction.