【摘要】 目的 優化牙釉質電子順磁共振（EPR）譜擬合程序。 方法 將牙釉質EPR譜擬合程序中的RIS-BGS偏移量設置為定參，取優化值；增加手動擬合功能，可以將參數初始值直接代入高斯模型得到擬合譜。 結果 將牙釉質EPR譜擬合程序中RIS-BGS偏移量設置為定參后，其優化值為0.529，減少了變參數量；采用手動擬合功能有助于調整參數初始值；在自動擬合程序對于個別樣品譜不能給出正確結果情況時，仍然可以通過手動擬合來得到一個近似的擬合結果。 結論 優化了EPR譜擬合程序的應用過程。【Abstract】 Objective To optimize the enamel electron paramagnetic resonance (EPR) spectrum fitting procedure. Methods RIS-BGS offset was set as a determined parameter in enamel EPR spectrum fitting program, and an optimized value was given for RIS-BGS offset. A manual fitting function was designed that can substite the initutial value into the Gaussian model function directly. Results RIS-BGS offset was set as a determined parameter, the optimized value of which was 0.529. The number of parameters decreased; the manual fitting function maked it easier to select initial values for parameters. When the auto fitting program failed to give a correct result for some EPR spectrum, a fitting result could still be obtained with the manual fitting method. Conclusion The application of the spectrum fitting procedure can be optimized.