The invention relates to the technical field of data filter, in particular to a Hash ring-based distributed data filter method. The method comprises the following steps: S101, receiving information of a distributed de-weighted cluster by a client; S102, client interface data condition request; S103, node reception request; S104, data filter block positioning: positioning data filter blocks of data after hash complementation according to a partition request sent by an RPC; and S105, data returning: carrying out data existence judgement on corresponding data blocks according to filter keys, returning corresponding states and returning the data. After adopting the structure, the method is capable of realizing a multi-tenant function so that the clients can add filters of established types according to the business demands; the lasting backup restoration of the filters can be realized so that the data loss can be avoided; the whole cluster is constructed on the basis of a consistent hash ring, so that the cluster is filtered to realize linear extension; and for the same filter, a plurality of sub-filters can be constructed, so that the false judgement rate can be reduced.