<p>Today’s society is progressing at an astonishing speed, and the demand for practical talents is also constantly increasing. From a design perspective, excellent design teachers with a strong professional theoretical foundation, excellent design skills, rich practical experience, and diverse educational methods are undoubtedly important factors in promoting the cultivation of practical talent quality. Therefore, this article proposes a design professional teacher training platform based on sensor signal processing and 3D digital reconstruction. This article first elaborates on a distributed fiber optic sensing system using Brillouin scattering technology. The system achieves more balanced and smooth data output through preprocessed fiber optic sensor signals, thereby improving the signal processing effect of fiber optic sensors. Next, a three-dimensional digital acquisition method based on the principles of triangulation was discussed, and a set of three-dimensional digital reconstruction strategies based on SFM algorithm was proposed, aiming to integrate the three-dimensional characteristics of images to enhance data consistency and accuracy, and thereby reduce image matching error rates. Finally, this article utilizes sensor signal processing and 3D digital reconstruction to construct a design professional teacher training platform, which can be used by teachers for teaching research and practical exploration.</p>