The invention aims at problems of data consistency and different management among multiple sets of equipment, and provides a cloud storage data synchronization method based on a plurality of control strategies. The data storage data synchronization method comprises the steps of customizing different synchronization methods by a user according to a data management requirement through disposing a cloud storage server and a cloud storage client; ensuring a fact that modification by one set of equipment is immediately distributed to other equipment and modification of other equipment is immediately downloaded to the local equipment by means of a real-time synchronization mechanism; finishing distribution and downloading of all modification contents generated in two time intervals in one time at a fixed time point by means of a fixed-time synchronization mechanism; temporarily canceling any data synchronization by means of a pausing synchronization mechanism; and ensuring a fact that target data are invisible on other equipment by means of a neglect synchronization mechanism. The data synchronization method based on a plurality of control strategies improves flexibility and furthermore improves synchronization process control by the user.