With the continuous development of digital resources, facing large-capacity digital resource verification, the existing file verification methods have greatly improved compared with the traditional file verification in terms of execution efficiency and utilization of server resources, but there are still some characteristics such as inflexibility, waste of server resources, limitations of file verification, etc. Therefore, this study proposes a new method based on server resource flexibility and concurrency. By using multi-concurrent and block-reading methods, we can rationally utilize the resource utilization of servers to improve the efficiency of file verification under the condition that the theoretical complexity of file Hash calculation remains unchanged.