In order to avoid the effects of speed and current sensor faults on the speed loop, current loop and suspension control in the vector control system of bearingless asynchronous motor (BAM), a fault-tolerant control strategy of the BAM sensor faults is proposed. Firstly, the extended observer is designed to realize the observation of the speed and error of the BAM, and the data fusion strategy is used to achieve smooth switching of the speed when the fault occurs. Then a reasonable threshold is designed to achieve fault diagnosis and fault tolerance of the speed sensor according to the speed observation error. Secondly, the current observation is realized according to the state equation, and the expansion observer is used to compensate the observed disturbance of the state equation. Then a reasonable threshold is designed to realize the fault diagnosis and fault tolerance of the current sensor according to the current observation error. Finally, the simulation and experiment results show that the proposed fault-tolerant control system for the BAM sensors can accurately achieve fault diagnosis and fault-tolerant control of speed and current within 0. 025 s, and the errors are within ±63 r/ min and 58 r/ min, respectively. In addition, the rotor displacement fluctuation amplitudes are within ±38 μm throughout the process, which indicates that the rotor can achieve good suspension.