The CT spectrometer teaching experimental setup provided by LBTEK is designed based on the CT (Czerny-Turner) optical architecture. Through modular components and an open experimental design, it helps students deeply understand the structural characteristics of the CT spectrometer and the working principles and applications of spectrometers. The system uses concave mirrors instead of traditional lenses to effectively eliminate chromatic aberration interference. Combined with a rotating grating displacement stage and an adjustable slit, it achieves high-precision control of the monochromator function, and quantifies spectral signals through a photodiode.