Contact structure of vacuum circuit breaker

The invention discloses a contact structure of a vacuum circuit breaker, and belongs to the technical field of vacuum circuit breakers, the contact structure comprises a contact blade, a contact cup and a conducting rod, the conducting rod is fixedly connected with the cup bottom of the contact cup, a conductive elastic spiral structure is arranged in the contact cup, and the conductive elastic spiral structure and the contact cup are coaxially arranged; the diameter of the conductive elastic spiral structure is smaller than that of the contact cup, the two ends of the conductive elastic spiral structure are fixed and electrically connected with the contact piece and the cup bottom of the contact cup respectively, and an opening and closing gap is formed between the contact piece and a cup opening of the contact cup. The conductive elastic spiral structure which is not in contact with the cup wall of the contact cup is additionally arranged in the contact cup, so that current can generate two different curren