The invention discloses a radial azimuth stepless adjustment for a gas drilling manifold, comprising a fixing sub, a fastener, a hanging flange and a rotating sub; the upper end of the rotating sub is in insertion connection and hermetic fit with the fixing sub, the lower end of the rotating sub is provided with an outlet connection end having predetermined fixing angle, the hanging flange sleeves the rotating sub, the fastener is positioned between the lower end of the fixing sub and the hanging flange, the rotating sub is hung to the fastener, the hanging flange is fixedly connected to the lower end of the fixing sub through a screw set, a roller bearing is disposed in an annular space between the fastener and the hanging flange, and a roller bearing is disposed between the fastener and the lower end of the fixing sub. The radial azimuth stepless adjustment enables the direction of a sand discharge line to be adjusted and enables the sand discharge line to be quickly connected out of a well site, repeated mounting and demounting is avoided, workload and work intensity are greatly reduced for workers, mounting period is shortened, worker cost and crane application expenditure are reduced.