The embodiment of the invention discloses a control method applied to an electronic device. A storage unit is arranged in the electronic device. The method comprises the following steps of: acquiring data information stored in the storage unit; detecting access frequency of a user to the data information in a predetermined time frame; dividing the data information into first data and second data according to the access frequency, wherein the first data is used for representing data which the access frequency of the user is greater than a first threshold value, and the second data is used for representing data which the access frequency of the user is smaller than the first threshold value; and carrying out backup processing on the first data by using a first strategy, and carrying out backup processing on the second data by using a second strategy. The embodiment of the invention also discloses the electronic device.