The invention discloses an electric pruning device. The electric pruning device comprises a power supply assembly and a saw head assembly for pruning, and further comprises a connecting rod assembly which is used for mounting the saw head assembly and is used for transmitting electric power of the power supply to the saw head assembly, wherein the connecting rod assembly comprises at least one conductive connecting rod; a first electric connecting part and a second electric connecting part are arranged at two ends of the conductive connecting rod respectively; the first electric connecting part is electrically connected with the second electric connecting part, and the different conductive connecting rods can be inserted in sequence so that the length of the connecting rod assembly is increased. According to the electric pruning device disclosed by the invention, the conductive connecting rods are adopted and a manner of retracting the connecting rod assembly section by section is realized through changing the quantity of the conductive connecting rods; the length of the connecting rod assembly can be changed randomly according to the requirements of field work under the condition that the connecting rod assembly is not limited by an electric power conveying lead wire, so that the pruning device can work at different space heights.