A method and an apparatus for examining a heartbeat signal based on a fitting curve are provided. The method includes following steps. A heartbeat signal which has passed an average process is obtained, and a characteristic wave is acquired from the heartbeat signal. A plurality of characteristic points of the characteristic wave are recognized. Based on the characteristic points, the characteristic wave is divided to a plurality of characteristic wave segments. Fitting is performed to the characteristic wave segments, so as to obtain a fitting curve corresponding to the characteristic wave. Based on the fitting curve, an evaluation parameter of the characteristic wave is calculated. The evaluation parameter is related to an unusual potential of the characteristic wave. Whether the heartbeat signal is an abnormal heartbeat signal is determined according to the evaluation parameter. Another method for processing a heartbeat signal based on a fitting curve is also provided.一種基於擬合曲線之心跳訊號的檢測方法以及檢測裝置。檢測方法包括下列步驟。取得經平均處理的心跳訊號，並且由心跳訊號擷取特徵波。辨識特徵波的多個特徵點。基於前述特徵點，區分特徵波為多個特徵波區段。對特徵波區段進行擬合以取得對應特徵波的擬合曲線。基於擬合曲線，計算評估參數。前述評估參數反應於特徵波的特殊電位。由評估參數判斷心跳訊號是否為異常心跳訊號。本發明還提供一種基於擬合曲線之心跳訊號的處理方法。
