As the core form of business in the sports industry chain, sports events are not only an important combination point to boost the development of mass sports and sports industry, but also have a strong driving effect on other forms of business.The development strategy of optimizing sports events and solving the realistic difficulties of sports events based on the 5G live broadcast model is of positive significance to the high-quality development of sports industry, the stimulation of sports consumption and the vitality of the sports market.Research methods such as literature method are used to study the optimization of sports events from the perspective of 5G live broadcast mode. Development advantages of 5G live broadcast mode and practical problems in the development of sports events are sorted out, and optimization development strategies combining the two are concluded.The research shows that there are some practical difficulties in sports events, such as too much operation and management cost, lagging application of new technology, poor live watching experience, insufficient demands of participants and business model to be improved.The paper puts forward the development strategies of increasing the audience capacity of sports events, completing the technical upgrading of sports events, satisfying the watching experience of sports fans, benefiting the participants of sports events and stimulating the commercial transformation of sports events.