In our research , we proposed a novel method to predict the most memorable lyric. Our research is based on Conditional Random Field (CRF) statistics method to train a predict model. In this model, we automatically extracted two set of features, Internal features and External features ,which help us to detect the most memorable sentence. We create a annotate system which can annotate the most memorable sentence in user’s familiar POP song . Based on these most memorable sentence in Chinese POP song, we compare different feature, different machine learning model, to find the efficient way.