The invention discloses a screwing up device and live wire connecting device of a puncturing wire clamp, and relates to the technical field of auxiliary devices of puncturing wire clamp. Concretely, the screwing up device of the puncturing wire clamp comprises a driving mechanism and sleeves, the driving mechanism can drive the sleeves to rotate via an output shaft, the number of the sleeves is the same with that of moment bolt heads of the puncturing wire clamp, the sleeves are arranged in one to one correspondence with the moment bolt heads, the two ends of each sleeve are communicated, thefirst end of each sleeve is adapted to the corresponding moment bolt head, and the second end of the sleeve can be detachably connected with the output shaft of the driving mechanism. Thus, the technical problem that a fractured moment bolt head tends to be stuck in the sleeve and is hard to take out is solved, and operation is convenient and rapid.