The invention discloses a dimming conversion module, and an LED driving apparatus and a control method thereof. The LED driving apparatus is used for driving an LED lamp, and comprises a rectifying bridge used for performing rectifying on an alternating current input voltage to obtain a direct current bus voltage, a dimming conversion module used for converting a dimming signal into a luminance control signal according to the type of a dimmer, a control module used for generating a first switch control signal according to the luminance control signal, and a power conversion module used for converting the direct current bus voltage into a direct current output signal according to the first switch control signal, so as to transmit electric energy to the LED lamp, wherein the power conversionmodule controls electric energy transmission according to the luminance control signal, so as to adjust the luminance of the LED lamp. The LED driving apparatus can automatically identify dimmers ofdifferent types, and can be fully compatible with the existing 0-10V direct current dimmers, thereby improving matching compatibility with dimmers of different types, and lowering design cost and manufacturing cost.