A horizontal-axis wind turbine is generally acted by two external forces: gravity and wind pushing force, and the two forces both generate friction loss; and a full-magnetic-suspension structure can be used for eliminating the wind pushing force friction loss and the gravity friction loss of the power generating set. Different from all other full-magnetic-suspension structure, the horizontal-axis wind turbine full-magnetic-suspension structure does not need extra magnet and control, and a magnetic suspension spring generated directly by a generator permanent magnet rotor body automatically balances the wind pushing force; and through deviation of a rotor axis, rotor gravity friction is greatly reduced, the friction loss of the wind pushing force and the rotor gravity in a bearing is eliminated, generating set efficiency is improved, more energy can be obtained from the wind, meanwhile, bearing wear and noise are reduced, maintenance and repair cost is reduced and the service life of the power generating set is improved. A magnetic suspension function of a generator magnetic field is utilized, thereby greatly reducing magnetic suspension improvement cost; the cost performance of the power generating set is improved, and meanwhile, the friction loss is eliminated and excellent mechanical performance is obtained; and the full-magnetic-suspension wind power generating set has great practical value and is suitable for a W-level-multi-MW-level direct drive set.