A dimming processing system for LED lamps, comprising a signal input area, a plurality of color trigger switches located in the signal input area, an HSV color selection area composed of the plurality of color trigger switches, and a non-color selection area located in the signal input area, a value module, and a dimming processing module, each of the color trigger switches corresponding to an HSV value, wherein only one color trigger switch is turned on at a time, the HSV color selection area is a circular area, the position of each color trigger switch in the circular area is represented by a polar coordinate system, the non-color selection area comprises a plurality of selection switches, and the dimming processing module is configured to adjust the HSV value of the light emitted by the LED lamp according to the HSV value corresponding to the turned-on color trigger switch, characterized in that the value module is configured to, upon selection of at least one of the color trigger switches by a user clicking or dialing the HSV color selection area with a finger, turn on the one of the selected at least one of the color trigger switches in the last selected HSV color selection area having the largest distance from the pole of the polar coordinate system when selecting the at least one of the color trigger switches is sequentially switched to selecting at least one of the selection switches by the user's finger sliding from the HSV color selection area to the non-color selection area, or when at least one of the selection switches and the selected at least one of the color trigger switches are simultaneously selected by the user's finger simultaneously touching the HSV color selection area and the non-color selection area. a signal input area, a plurality of color trigger switches located in the signal input area, an HSV color selection area composed of the plurality of color trigger switches, and a non-color selection area located in the signal input area, a value module, and a dimming processing module, each of the color trigger switches corresponding to an HSV value, wherein only one color trigger switch is turned on at a time, the HSV color selection area is a circular area, the position of each color trigger switch in the circular area is represented by a polar coordinate system, the non-color selection area comprises a plurality of selection switches, and the dimming processing module is configured to adjust the HSV value of the light emitted by the LED lamp according to the HSV value corresponding to the turned-on color trigger switch, characterized in that the value module is configured to, upon selection of at least one of the color trigger switches by a user clicking or dialing the HSV color selection area with a finger, turn on the one of the selected at least one of the color trigger switches in the last selected HSV color selection area having the largest distance from the pole of the polar coordinate system when selecting the at least one of the color trigger switches is sequentially switched to selecting at least one of the selection switches by the user's finger sliding from the HSV color selection area to the non-color selection area, or when at least one of the selection switches and the selected at least one of the color trigger switches are simultaneously selected by the user's finger simultaneously touching the HSV color selection area and the non-color selection area.