The invention provides a logic backup method and a logic backup system for a database. The method comprises the following steps: a network segment centralized deployment node sends logic backup requests to a plurality of nodes of a production server; the nodes of the production server achieve logic backup of production data according to the logic backup requests so as to obtain backup data; the production server sends operation information and backup logs, which are generated in the logic backup process, to the network segment centralized deployment node; the network segment centralized node collects a plurality of backup logs to generate log information; a center node grabs the log information and the operation information on the network segment centralized deployment node; the center node analyzes the log information to obtain analysis result information; and the center node analyzes the operation information to acquire analysis result. The invention solves the difficult technical problems in the prior art that the management of the backup system is decentralized, the quantity of backup operation is large and operation and maintenance are cumbersome.