The invention relates to the technical field of engineering machinery, and discloses a feedback current control device and an overhead working truck. The feedback current control device comprises a feedback current capturing module, a first switch module and a control module, wherein the feedback current capturing module is located on a current capturing circuit and is used for capturing a feedback current; the first switch module is used for conducting or switching off the current capturing circuit; and the control module comprises a first receiving unit and a first control unit, and the first receiving unit is used for receiving a first voltage at one end of a driver on a power supply circuit, a second voltage at one end of a battery and the temperature of the battery, the first controlunit is used for executing the following operation according to the difference value of the first voltage and the second voltage and the temperature of the battery, under the condition that the difference value of the first voltage and the second voltage is greater than a preset voltage and the temperature of the battery is less than or equal to a preset temperature, the current capturing circuitis conducted by controlling the first switch module, and the feedback current is captured by the feedback current capturing module. According to the feedback current control device and the overhead working truck, the probability of lithium precipitation of the battery and the risk of thermal runaway of the battery can be greatly reduced.