In order to solve the problems of the traditional LED driver adopting the frequency control with high EMI, pulse width modulation (PWM) with the complex control circuit，and the LLCC, LCLC resonant topology realizing constant current output system with the large volume, high cost and low power density, a resonant multi-channel sharing current LED driver based on variable inductor is presented. The variable inductor(VI) is used to replace the fixed inductance, which changes the resonant frequency for achieving dimming and controlling. Meanwhile, the resonant is introduced to realize the high conversion efficiency in ZVS(zero voltage switching) of all devices. The current sharing capacitor is used in each channel to simplify the structure of the circuit. Based on the theoretical analysis and simulation, an 11 W laboratory prototype is built to achieve the 4-channel LED driver. The research results show the multiple LED driver improves the characteristic of the current-sharing and frequency conversion dimming, as well as the power density and the service life of LED drivers, suiting for application in surgery dimming and home lighting.