The current research based on Bi2Te3 nanomaterials applied in the field of sports rehabilitation is not deep enough. Therefore, the research purpose of this paper is based on the application of fabric sensors modified with Bi2Te3 nanomaterials in the field of sports rehabilitation. First, learn about the basic structure of Bi2Te3 nanomaterials and prepare for the synthesis of fabric sensors based on nano-Bi2Te3 materials with uniform morphology and higher purity. Secondly, fabric sensors are required to improve the response speed and sensitivity of the dynamic response process and be used in sports. Research on rehabilitation is to further improve the practicality of fabric sensors. Finally, the thermoelectric properties of the performance of Bi2Te3 nanomaterials are used, which shows that the material's function of converting thermal energy into electrical energy can help the wide application of fabric sensors. Experimental data shows that the pressure on the sole of the foot using the fabric sensor as a tool is 150 Newtons, and the effect of accelerating the rehabilitation of each joint is 1.5 times. The experimental results show that the fabric sensor modified based on Bi2Te3 nanomaterials can accelerate the rehabilitation process of patients in the field of sports rehabilitation.