The present invention provides a booster cable capable of reliably being connected to a terminal that is provided in a limited space. Specifically, a connecting clip 3 is attached to both ends of a cable main body 4. Clamping sections 6a of the connecting clip 3 are set to be wide and outer surfaces of the pair of clamping sections 6a are set to be substantially in parallel in a closed state so that the clamping sections 6a are set to have approximately same thickness up to root portions. The root portions of the clamping sections 6a do not interfere so that the clamping sections 6a are able to be inserted into a limited space up to the root portions. It is thereby possible to sufficiently clamp and reliably connect the assisting terminal 5 that is provided in a limited space.