A fingerprint identification system connected with a touch screen, comprising a fingerprint identification region arranged on the touch screen to acquire an input fingerprint; a fingerprint verification module connected with the fingerprint identification region to verify whether the input fingerprint is a fingerprint of a user and to unlock the touch screen if it is determined that the input fingerprint is the fingerprint of the user; an application start control module connected with the fingerprint identification region and the fingerprint verification module respectively and configured to obtain a finger press direction from the input fingerprint and start an application corresponding to the finger press direction when the input fingerprint is the fingerprint of the user, wherein the finger press direction is a direction in which a finger sequentially contacts the fingerprint identification region when the finger presses the fingerprint identification region or a direction opposite thereto; and the finger press direction corresponds to at least one application, wherein the application start control module comprises: a direction obtaining unit connected with the fingerprint identification region and the fingerprint verification module respectively and configured to obtain the finger press direction based on the input fingerprint when the input fingerprint is the fingerprint of the user; an angle calculation unit connected with the direction obtaining unit and configured to calculate an angle formed between the finger press direction and a reference direction, the angle being positive in an anticlockwise direction; a storage unit storing correspondences between preset angle ranges and applications, wherein the preset angle ranges are within a range of 360 degree in the anticlockwise direction from the reference direction as a starting direction, and each of the preset angle ranges corresponds to at least one application; and a determination unit connected with the angle calculation unit and the storage unit respectively and configured to determine the preset angle range within which the calculated angle is, retrieve an application corresponding to the calculated angle based on the correspondences between the preset angle ranges and the applications, and start the application, wherein the storage unit further stores correspondences between the preset angle ranges and display content orientations; and wherein the determination unit is further configured to retrieve a display content orientation corresponding to the calculated angle based on the correspondences between the preset angle ranges and the display content orientations and allows the started application to be displayed in the display content orientation. a direction obtaining unit connected with the fingerprint identification region and the fingerprint verification module respectively and configured to obtain the finger press direction based on the input fingerprint when the input fingerprint is the fingerprint of the user; an angle calculation unit connected with the direction obtaining unit and configured to calculate an angle formed between the finger press direction and a reference direction, the angle being positive in an anticlockwise direction; a storage unit storing correspondences between preset angle ranges and applications, wherein the preset angle ranges are within a range of 360 degree in the anticlockwise direction from the reference direction as a starting direction, and each of the preset angle ranges corresponds to at least one application; and a determination unit connected with the angle calculation unit and the storage unit respectively and configured to determine the preset angle range within which the calculated angle is, retrieve an application corresponding to the calculated angle based on the correspondences between the preset angle ranges and the applications, and start the application, wherein the storage unit further stores correspondences between the preset angle ranges and display content orientations; and wherein the determination unit is further configured to retrieve a display content orientation corresponding to the calculated angle based on the correspondences between the preset angle ranges and the display content orientations and allows the started application to be displayed in the display content orientation.