This paper discusses the current situation and SWOT (strengths, weaknesses, opportunities, threats) of Sanya's sports tourism industry development under the background of "Event + Travel", and puts forward corresponding development countermeasures. Sanya has rich tourism resources, suitable climate conditions and policy support, but its sports tourism has problems such as insufficient service standardization, homogeneous products and shortage of professional talents. Facing opportunities such as upgraded market demand and opportunities to host international events, as well as threats such as market competition and natural disasters, the study suggests improving development quality by building ethnic characteristic brands, developing theme projects and improving supporting facilities.