Abstract: The present disclosure discloses a data query system, method, and storage medium. The data query system includes a proxy server and at least one proxy client. The proxy server is disposed on a server that serves as a data provider, and is configured to provide the proxy client with a data delivery service. The proxy client is disposed on a client that serves as a data user, and is configured to obtain data from the proxy server and save the data and provide a data query service. The proxy client thus includes a data obtaining module, a data query module, and a second shared memory. Accordingly, the present disclosure further discloses a data query method. The present disclosure has a simple structure, achieves fast data update, requires a low deployment cost, saves bandwidth resources, and achieves excellent service performance.