The invention relates to a magnetic-levitation train levitation control method used for controlling currents of tandem coil groups at the two ends of an electromagnet of a magnetic-levitation train.According to the method, periodic control is adopted, and the following steps that 1, data signals and sensor diagnosis signals of levitation sensors at the two ends of the electromagnet are obtained; 2, whether all data is out of order or not is judged respectively according to the sensor diagnosis signals, and selection of a levitation control signal is conducted according to a judging result; 3, expected values of the currents needed by the tandem coil groups at the two ends are calculated according to the levitation control signal; 4, self diagnosis signals of a first end master controller and a second end master controller are obtained and sent to a redundant controller, and the currents of the tandem coil groups are controlled according to diagnosis are executed in each control period.Compared with the prior art, according to the magnetic-levitation train levitation control method, fault diagnosis information and the redundant controller are combined, when the master controllers or the levitation sensors are out of order, the magnetic-levitation train can still work normally, the outage time is reduced, and the availability of the magnetic-levitation train is improved.