To expand the application of seismic intensity meter (SIM) data in local magnitude determination, we collected  acceleration records from 63 earthquake events with M_L≥2.0 in Hebei Province during 2021—2024. We derived an optimized local magnitude calibration function and 945 station-specific correction values for SIMs. For 63 selected events, the expected value of the local magnitude deviation distribution was −0.0142, and the standard deviation was 0.4149. Finally,eleven earthquake events with M_L≥2.0 from January to May 2025 were selected for independent validation.The expected value of the local magnitude deviation distribution was 0.034, and the standard deviation was 0.055.In this study, by constructing the magnitude calibration function and station correction values for local magnitude determination using SIMs, the feasibility of local magnitude measurement with SIMs was verified. This provides a reference for the application of SIM data in subsequently routine local magnitude determination work.