A data information transaction method, comprising: acquiring, by a server, a data source, and extracting a digital human according to the data source, wherein the data source is user data of the actual user, and saving the digital human locally; pushing, by the server, according to user identifiers of actual users respectively corresponding to digital humans, a message to a terminal of a user corresponding to each user identifier, so as to instruct an end user to perform setting of a permission management parameter on user characteristic information of the end user; receiving, by the server, a permission management request sent by a terminal of a data provider, wherein the foregoing data provider is an actual user corresponding to a digital human stored in the server, and wherein the permission management request comprises an identifier of the data provider and an access permission setting parameter; setting, by the server according to the access permission setting parameter, access permission for user characteristic information comprised in a digital human corresponding to the identifier of the data provider; receiving, by the server, a query request sent by a terminal of a data requester, wherein the query request comprises a query condition and a user characteristic identifier of a digital human that needs to meet the query condition, the digital human is configured to describe, in a digital world environment, a characteristic of an actual user in the physical world, and the user characteristic identifier is a characteristic category identifier obtained by classifying user characteristic information comprised in the digital human; determining, by the server, user characteristic information that is of a digital human and corresponding to the query condition and the user characteristic identifier, obtaining a query result according to an access permission setting parameter of the user characteristic information of the digital human, and sending the query result to the terminal of the data requester; and receiving, by the server, a purchase request that is sent by the terminal of the data requester according to the query result, and completing a transaction according to the purchase request, wherein the purchase request is configured to instruct to purchase the user characteristic information of the digital human corresponding to the query result. acquiring, by a server, a data source, and extracting a digital human according to the data source, wherein the data source is user data of the actual user, and saving the digital human locally; pushing, by the server, according to user identifiers of actual users respectively corresponding to digital humans, a message to a terminal of a user corresponding to each user identifier, so as to instruct an end user to perform setting of a permission management parameter on user characteristic information of the end user; receiving, by the server, a permission management request sent by a terminal of a data provider, wherein the foregoing data provider is an actual user corresponding to a digital human stored in the server, and wherein the permission management request comprises an identifier of the data provider and an access permission setting parameter; setting, by the server according to the access permission setting parameter, access permission for user characteristic information comprised in a digital human corresponding to the identifier of the data provider; receiving, by the server, a query request sent by a terminal of a data requester, wherein the query request comprises a query condition and a user characteristic identifier of a digital human that needs to meet the query condition, the digital human is configured to describe, in a digital world environment, a characteristic of an actual user in the physical world, and the user characteristic identifier is a characteristic category identifier obtained by classifying user characteristic information comprised in the digital human; determining, by the server, user characteristic information that is of a digital human and corresponding to the query condition and the user characteristic identifier, obtaining a query result according to an access permission setting parameter of the user characteristic information of the digital human, and sending the query result to the terminal of the data requester; and receiving, by the server, a purchase request that is sent by the terminal of the data requester according to the query result, and completing a transaction according to the purchase request, wherein the purchase request is configured to instruct to purchase the user characteristic information of the digital human corresponding to the query result.