The invention relates to the field of permanent magnet couplers, in particular to a permanent magnet vortex flexible spherical coupler. The permanent magnet vortex flexible spherical coupler comprises an input shaft, an output shaft, a conductor and a permanent magnet. The conductor is connected with the input shaft through a conductor disk base. The permanent magnet is connected with the output shaft through a magnetic disk base. Air gaps are formed between the conductor and the permanent magnet. The permanent magnet vortex flexible spherical coupler is characterized in that the conductor and the permanent magnet form a spherical connection pair; the air gaps are distributed between matching spherical surfaces which are located between the conductor and the permanent magnet; the magnetic disk base or the conductor disk base is provided with a fan; the fan is arranged on the magnetic disk base; the permanent magnet is provided with a vent hole. Compared with the prior art, the permanent magnet vortex flexible spherical coupler has the advantages that since the permanent magnet and the conductor are connected with each other through the spherical air gaps, the influence of an included angle between a load and a connecting shaft of a motor on the uniformity of the air gaps can be effectively overcome, smooth running of equipment can be guaranteed beneficially, and the transmission efficiency of motor torque is improved; the vent hole is formed in the middle of the permanent magnet, so that demagnetization caused by vortex heating is effectively prevented.