The invention discloses a vortex fixing device of a transformer thermometer capillary tube. The vortex fixing device comprises an insulation disc and the transformer thermometer capillary tube and is characterized in that four magnetic blocks are embedded in the periphery of a bottom plate surface of the insulation disc at equal distance, capillary tube clips are arranged on the upper plate surface of the insulation disc and are arranged in a vortex way, an initial end clamping groove of the transformer thermometer capillary tube is arranged at one side of the upper plate surface of the insulation disc, an initial end rubber clip is arranged at the outer end of the initial end clamping groove, and a leading-out end clamping opening is arranged in an edge position of the other side of the upper plate surface of the insulation disc. By the capillary tube vortex fixing device, the transformer thermometer capillary tube can be in a vortex shape, and the capillary tube cannot be twisted and cannot swing in a high wind condition; the vortex fixing device can be rapidly installed, the working efficiency is improved, and the normal running of a transformer is ensured; and meanwhile, the whole transformer is clean and attractive; and moreover, the vortex fixing device is simple in structure and is easy to operate. The vortex fixing device can be widely used for protection of the thermometer capillary tube of the transformer of 35kV or over 35kV.