Data management method and system, data service gateway and storage medium

The invention discloses a data management method and system, a data service gateway and a storage medium, the method is applied to the data service gateway, the data service gateway is deployed on a data all-in-one machine in the data management system, and the method comprises the following steps: receiving a data query request sent by a data consumer by calling a target application program interface, the data query request at least comprises input parameters; performing security verification on the data query request according to a predetermined target access security policy; if the security verification is passed, performing data query according to the input parameters, and determining target data; the target data is processed according to the predetermined target data security policy, the response message is determined, and the response message is fed back to the data consumer, so that the problem of sensitive data leakage during data query is solved, the problem that access security and data security of