Streaming data access method and device in streaming data storage system

The invention provides a streaming data access method and device in a streaming data storage system, relates to the technical field of data processing, and can quickly execute streaming data mode schema change and improve data analysis efficiency. The streaming data storage system stores streaming data of which the streaming data mode schema is a first version and streaming data of which the schema is a second version, and the schema of the first version and the schema of the second version respectively correspond to a plurality of fields; and the field of the schema of the first version is at least partially different from the field of the schema of the second version. The method comprises the steps that a streaming data storage system receives a streaming data reading request sent by a consumer; the version of the schema of the streaming data used by the consumer is a second version; the stream data reading request is used for requesting schema to be stream data of a first version; the schema of the first v