The invention relates to a radial vibration-reducing stress-dissipating bracket for a pressure pipeline. The radial vibration-reducing stress-dissipating bracket for the pressure pipeline comprises a lower supporting block (9) and a lower bottom plate (13); the pressure pipeline (15) is supported on the lower supporting block (9); and the lower supporting block (9) is supported on the lower bottom plate (13). The radial vibration-reducing stress-dissipating bracket for the pressure pipe is characterized in that vertical type fixing brackets (11) are symmetrically arranged at two sides of the lower bottom plate (13); two radial clamping blocks (1) which are matched with the two sides of the pressure pipeline (15) are respectively connected with corresponding supporting plates (8); the supporting plates (8) are connected with corresponding vertical type fixing brackets (11) through respective fastening connecting pieces (7); and elastic supporting assemblies (20) are mounted on the fastening connecting pieces (7) and between the vertical type fixing brackets (11) and the supporting plates (8). With the adoption of the radial vibration-reducing stress-dissipating bracket for the pressure pipe, the rigidity of a piping system can be maintained and a vibrating stress generated in the radial direction of the piping system can be eliminated, thus the requirement of vibration-reducingsupport for the pressure pipeline can be satisfied.