The precise measurement of the transition wavelength of the fine structure of highly charged ions can not only test basic physical theories including the QED effect and the electronic correlation effect but also provide key atomic data for astrophysics and fusion plasma physics. Furthermore, highly charged ions are considered as the potential candidates for optical clocks with extremely ultra-high precision. In this work, a new spectral calibration system was built at the high-temperature superconducting beam ion trap (SH-HtscEBIT) at the Institute of Modern Physics, Fudan University, and the uncertainty of its spectrum wavelength measurement was evaluated by the method of combining internal and external calibrations. The minimum wavelength uncertainty caused by the new spectral calibration system in the visible light band reached 0.002 nm. On this basis, the precise measurement of 2s22p 2P1/2 – 2P3/2 M1 transition wavelength for boron-like Ar13+ has been performed at the SH-HtscEBIT by utilizing the new calibration system. The experimentally measured transition wavelength is 441.2567 ± 0.0026 nm. It is currently the experimental result with the highest measurement accuracy of spectroscopy of highly charged ions at the SH-HtscEBIT, which lays the foundation for precise measurement of the hyperfine splitting and isotope shift of highly charged ions for the forthcoming experiments.