The invention discloses a catalog data parsing method. The catalog data parsing method comprises the following steps of: receiving a catalog data inquiry request sent from a client, looking up catalog data in a local domain catalog server according to the inquiry request, inquring whether the catalog data corresponding to the inquiry request is recorded in an image information table preset in the local domain catalog server when the catalog data is not looked up in the local domain catalog server, reading image relation information in an image relation table when the catalog data is not recorded, and sending referral information to the client; and instructing the client to initiate the catalog data inquiry request to a remote catalog server according to the referral information, getting the catalog data required by the client from the remote catalog server, and storing the catalog data obtained from the client into the image information table. According to the catalog data parsing method disclosed by the invention, by establishing an image of the remote catalog data in the local domain catalog server, remote parsing can be localized, inquiry speed is improved and burden on a network is reduced.