A folding screen device comprising a first body (501, 601), a second body (502, 602), a central processing unit (503, 603), a first acceleration gyro sensor (506, 606), a second acceleration gyro sensor (507, 607), a first geomagnetic module (504, 604) and a second geomagnetic module (505, 605), wherein the first geomagnetic module (504, 604), the second geomagnetic module (505, 605), the first acceleration gyro sensor (506, 606) and the second acceleration gyro sensor (507, 607) are coupled to the CPU (503, 603) respectively; the first geomagnetic module (504, 604) and the first acceleration gyro sensor (506, 606) are inside the first body (501, 601), and the second geomagnetic module (505, 605) and the second acceleration gyro sensor (507, 607) are inside the second body (502, 602); the first acceleration gyro sensor (506, 606) and the second acceleration gyro sensor (507, 607) are configured to obtain a body status of the folding screen device; characterised in that the CPU (503, 603) is configured to control working statuses of the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) according to the body status, wherein the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) are configured to detect a magnetic field environment, the first body (501, 601) comprises a first display screen, the second body (502, 602) comprises a second display screen, and the body status refers to an orientation of the first display screen and the second display screen, the folding screen device further comprising a first power source and a second power source, wherein control working statuses of the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) according to the body status comprising: control the first power source and the second power source to supplying power for the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) when both of the first display screen and the second display screen are vertically upward; control the first power source to supplying power for the first geomagnetic module (504, 604) when the first display screen is vertically upward and the second display screen is vertically downward; and control the second power source to supplying power for the second geomagnetic module (505, 605) when the second display screen is vertically upward and the first display screen is vertically downward. the first geomagnetic module (504, 604), the second geomagnetic module (505, 605), the first acceleration gyro sensor (506, 606) and the second acceleration gyro sensor (507, 607) are coupled to the CPU (503, 603) respectively; the first geomagnetic module (504, 604) and the first acceleration gyro sensor (506, 606) are inside the first body (501, 601), and the second geomagnetic module (505, 605) and the second acceleration gyro sensor (507, 607) are inside the second body (502, 602); the first acceleration gyro sensor (506, 606) and the second acceleration gyro sensor (507, 607) are configured to obtain a body status of the folding screen device; characterised in that the CPU (503, 603) is configured to control working statuses of the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) according to the body status, wherein the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) are configured to detect a magnetic field environment, the first body (501, 601) comprises a first display screen, the second body (502, 602) comprises a second display screen, and the body status refers to an orientation of the first display screen and the second display screen, the folding screen device further comprising a first power source and a second power source, wherein control working statuses of the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) according to the body status comprising: control the first power source and the second power source to supplying power for the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) when both of the first display screen and the second display screen are vertically upward; control the first power source to supplying power for the first geomagnetic module (504, 604) when the first display screen is vertically upward and the second display screen is vertically downward; and control the second power source to supplying power for the second geomagnetic module (505, 605) when the second display screen is vertically upward and the first display screen is vertically downward. control the first power source and the second power source to supplying power for the first geomagnetic module (504, 604) and the second geomagnetic module (505, 605) when both of the first display screen and the second display screen are vertically upward; control the first power source to supplying power for the first geomagnetic module (504, 604) when the first display screen is vertically upward and the second display screen is vertically downward; and control the second power source to supplying power for the second geomagnetic module (505, 605) when the second display screen is vertically upward and the first display screen is vertically downward.