Dimming driving method

The present invention relates to a dimming driving method, apparatus, and lamp dimming. Dimming driving method comprising: the light source and the light source driving circuit supplying the first conduction MCU, MCU controls the light source drive circuit drives the light source to a cured graded shading a predetermined program; after the light source driving circuit is opened, temporary power supply circuit continues to supply power to the MCU; and disconnection instant in the light source is a light source driving circuit graded shading state, the MCU acquires the instantaneous luminance state light source drive circuit when turned off and the state of the luminance information is temporarily stored; in after the temporary power supply circuit is depleted, the information stored luminance state disappears; status information disappears before the luminance light source driving circuit is turned on, the MCU controls the light source driving circuit according to the luminance information of the driving state of the light source constant work; in after the state information disappears luminance light source driving circuit is turned on, MCU controls the light source drive circuit drives the light source graded shading following the procedure set in advance.