Method for protecting and restoring continuous data

The invention relates to a method for protecting and restoring continuous data, belongs to the computer data storage and backup method and aims to solve the problem that appropriate restoring time is difficult to identify by the existing method for protecting and restoring continuous data. In the invention, a host computer process and a server process are provided, the two processes are carried out in parallel; the host computer process comprises the following steps: initiating connection, copying, host computer command judgment, recording write operation info, carrying out full restoration and incrementation storage; the server process comprises the following steps: accepting connection, storing copied data by the server, command judgment by the server, write operation info storage by the sever, restoring request judgment and restoring data. With the method of the invention adopted, user requests for storing data to any-point-in-time can be supported and write data needed for completing restoration can be minimized; in addition, restoration time can be more conveniently and more effectively adjusted to seek appropriate recovery points and data loss can be minimized. The host computer and the server are separated, so that when a local host computer hard disk is damaged, data restoration can still be carried out.