The invention provides a persona access method, which comprises the following steps that: S1: according to a plurality of target tags sent from a business side and a logic relationship among a plurality of target tags, generating a semantic tree, and generating a query code according to the semantic tree; S2: sending the query code to a data side for the data side to carry out query on user portrait data stored in the data side on the basis of the query code, and obtaining target data, wherein the target data is the user portrait data which conforms to the logic relationship among the plurality of target tags; and S3: receiving the target data returned from the data side, and sending the target data to the business side. By use of the persona access method, the semantic tree is applied togenerate the query code, the automatic access of a business party is realized, requirement communication cost between the business party and a persona party is lowered, the data query pressure of thepersona party is released, and persona access efficiency is improved.