The invention provides a detection model acquisition method and a detection model acquisition device. The method comprises the following steps: acquiring morphological characteristics of a first preset number of cardiac cycles, wherein the morphological characteristics of the first preset number of cardiac cycles includes morphological characteristics of a second preset number of first type of cardiac cycles and morphological characteristics of a third preset number of second type of cardiac cycles; by virtue of a clustering algorithm, clustering the morphological characteristics of the first preset number of cardiac cycles; extracting morphological characteristics of cardiac cycles from the morphological characteristics of each type of cardiac cycles in accordance with a first preset rule; and in accordance with the extracted morphological characteristics of the cardiac cycles, training the acquisition of a first parameter detection model by virtue of a first preset method. According to the detection model acquisition method and the detection model acquisition device provided by the invention, the first parameter detection model is obtained by conducting training with morphological characteristics of an original cardiac cycle as training data and the data is subjected to centralized clustering by virtue of the clustering algorithm; and the data is representative, so that the classification performance of the trained first parameter detection module is improved.