The utility model provides a coke drum feeding device, which solves technical problems of vibration of coke drums and the like due to the fact that existing delayed coking units adopt the bottom feeding mode. The coke drum feeding device comprises a top feeding system and a bottom feeding system. The top feeding system comprises a transfer line, a four-way valve, a startup line, a three-way valve and an isolating valve. The bottom feeding system comprises another transfer line, a three-way valve, an isolating valve, an inlet pipeline and a steam purging pipeline. The coke drum feeding device not only reduces vibration of the coke drum but increases liquid yield.