An electric front derailleur, comprising: a support member, disposed on a frame of a bicycle and having a first mounting portion and a second mounting portion; a driving unit, disposed in the first mounting portion and configured to drive a worm gear to rotate; a first transmission unit, having at least one transmission gear that is driven by the worm gear; a second transmission unit, comprising a rack, a linking member, and a swing member, wherein the rack is engaged with the transmission gear and movably disposed in the second mounting portion, and the linking member has one end pivoted to the rack and the other end pivoted to the swing member; a chain guide, comprising a pivot portion, and a chain guiding portion, wherein the pivot portion are pivoted to the swing member, and the chain guiding portion is configured to move a chain.