The invention discloses a module and method for connecting a constant-current source with a wireless module in an LED intelligent illuminating system and relates to the dimming field of illuminating circuits. The module comprises a power input end, a power output end, a control signal input end, and a control signal output end. A voltage-stabilizing circuit is connected between the power input end and the power output end. A signal processing circuit is connected between the control signal input end and the control signal output end. By acquiring power from the constant-current source, performing voltage stabilization, supplying power to the wireless receiving module, processing a PWM control signal output from the wireless receiving module and feeding a processed PWM control signal back to the constant-current source, the module achieves convenient butting between the constant-current source and the wireless receiving module and dims the constant-current source by using the wireless receiving module.