The invention relates to fixed contact assembly of a valve hall and a tubular bus and fixed contact connection fitting thereof. The tubular bus and fixed contact connection fitting comprises a shielding ball which comprises a spherical casing; the casing walls of the opposite sides of the spherical casing are provided with a pair of bus punched holes for a corresponding tubular bus to penetrate; a bus fitting which is used for fixing the spherical casing on the tubular bus is fixedly arranged on the casing wall of the spherical casing and located inside the shielding ball; a contact fitting which is used for installing a corresponding fixed contact is fixedly arranged on the bus fitting and located inside the shielding ball. According to the tubular bus and fixed contact connection fitting and the fixed contact assembly utilizing the same, the structure is simple.