The invention relates to a jumper wire connecting metal fitting for a tubular bus bar. The jumper wire connecting metal fitting comprises foundation supports which are fixedly connected to post insulators, wherein the foundation supports are provided with two tubular bus bar supports which are arranged at intervals and used for two tubular bus bars which are in one-to-one correspondence and of which fixed supports are positioned on the same horizontal plane. The connecting metal fitting also comprises a jumper wire assembly for achieving diversion and wire exchange of the two tubular bus bars, and shielding balls fixedly arranged on the foundation supports, wherein the bus bar supports, the jumper wire assembly and the foundation supports are all arranged in inner cavities of the shielding balls; the shielding balls are provided with insulation via holes through which the support insulators pass so as to be fixedly connected with the foundation supports and tubular bus bar via holes through which the two tubular bus bars pass. Because the bus bar supports, the jumper wire assembly and the foundation supports of the connection metal fitting are all arranged in the shielding balls, and the shielding anticorona effect of the whole jumper wire connecting metal fitting of the tubular bus bars is enhanced via the shielding balls.