A scanning technique backlight driving method for driving a backlight source of a display device, the backlight source comprising a plurality of areas (A, B, C, D), wherein each of the areas (A, B, C, D) of the backlight source is separately sequentially controllable by a respective driving signal, the method including steps of: acquiring turn-on timing periods of the respective areas (A, B, C, D) of the backlight source of the display device from a timing controller in the display device and acquiring an opening time period of a 3D glasses; calculating overlapping time periods ΔT 1, ΔT 2,..., ΔT n between the opening time period of the 3D glasses and each of the turn-on timing periods of the respective areas (A, B, C, D) of the backlight source, wherein n indicates the number of areas (A, B, C,D) of the backlight source; calculating and adjusting amplitudes of driving signals I 1, I 2,..., I n for the respective areas (A, B, C, D) of the backlight source, so that ∫ 0 Δ T 1 I 1 dt = ∫ 0 Δ T 2 I 2 dt = ⋯ = ∫ 0 Δ T n I n dt = L, wherein brightness is represented by an integral value of the amplitude of the driving signal over the length of the overlapping time period, and L is a preset brightness value; and driving the corresponding areas (A, B, C, D) in the backlight source to be turned on by using the adjusted driving signals for the respective areas (A, B, C, D) of the backlight source; characterized in that the step of adjusting the driving signals for the respective areas (A, B, C, D) of the backlight source further comprises: adjusting durations of the driving signals I 1, I 2,..., I n respectively to the overlapping time periods ΔT 1, ΔT 2,..., ΔT n through controlling the on/off time of the driving signals such that the duration of being controlled to be on of each of the n driving signals I 1, I 2,..., I n is equivalent to the respective overlapping time period ΔT 1, ΔT 2,..., ΔT n and that each of the driving signals I 1, I 2,..., I n is controlled to be off when the 3D glasses are not open. acquiring turn-on timing periods of the respective areas (A, B, C, D) of the backlight source of the display device from a timing controller in the display device and acquiring an opening time period of a 3D glasses; calculating overlapping time periods ΔT 1, ΔT 2,..., ΔT n between the opening time period of the 3D glasses and each of the turn-on timing periods of the respective areas (A, B, C, D) of the backlight source, wherein n indicates the number of areas (A, B, C,D) of the backlight source; calculating and adjusting amplitudes of driving signals I 1, I 2,..., I n for the respective areas (A, B, C, D) of the backlight source, so that ∫ 0 Δ T 1 I 1 dt = ∫ 0 Δ T 2 I 2 dt = ⋯ = ∫ 0 Δ T n I n dt = L, wherein brightness is represented by an integral value of the amplitude of the driving signal over the length of the overlapping time period, and L is a preset brightness value; and driving the corresponding areas (A, B, C, D) in the backlight source to be turned on by using the adjusted driving signals for the respective areas (A, B, C, D) of the backlight source; characterized in that the step of adjusting the driving signals for the respective areas (A, B, C, D) of the backlight source further comprises: adjusting durations of the driving signals I 1, I 2,..., I n respectively to the overlapping time periods ΔT 1, ΔT 2,..., ΔT n through controlling the on/off time of the driving signals such that the duration of being controlled to be on of each of the n driving signals I 1, I 2,..., I n is equivalent to the respective overlapping time period ΔT 1, ΔT 2,..., ΔT n and that each of the driving signals I 1, I 2,..., I n is controlled to be off when the 3D glasses are not open.