Under the socialist market economic system of our country, the government, through the “invisible hand,” carries on macro regulation and control to improve the financing constraints that small and medium-sized enterprises are facing. But because of the huge base number of small and medium-sized enterprises in our country, there are many kinds, and the problem of financing constraints is still puzzling the development of enterprises at present. With the continuous promotion of inclusive finance in our country, the problems plaguing SMEs in the last mile of financing are gradually improved. In this context, small and medium-sized enterprises in Hainan Free Trade Port are taken as the research object to study the role of digital inclusive finance on the financing constraints of SMEs. The research shows that, first of all, small and medium-sized enterprises in Hainan Free Trade Port generally have financing problems. The development of digital inclusive finance solves the “last kilometer” problem of traditional finance, enhances financial access ability, broadens the financial service group, provides convenience and diversified services for SMEs’ financing, and provides inexhaustible impetus for the long-term healthy development of SMEs. Secondly, digital inclusive finance alleviates the financing difficulties faced by SMEs on the island by reducing financial costs and expanding the scale of credit.