The college classroom is an important field for talent cultivation and student development in colleges and universities. However, in actual teaching, only a relatively small number of Chinese college students are able to actively participate in classroom activities and speak positively. Most students often choose to remain silent in response to teachers' questions. Classroom silence is generally categorized into negative silence and positive silence. Negative silence has become a major obstacle to improving the efficiency of classroom teaching, which to some extent affects the effectiveness and function of classroom teaching. By analyzing classroom silence, a common phenomenon in Chinese university classrooms, and analyzing the phenomenon of classroom silence and its causes from the perspectives of teachers' teaching and students' learning, we can better understand the characteristics of college students' classroom participation, reveal the deficiencies of teachers' classroom teaching, further propose strategies to improve classroom teaching and reduce the phenomenon of negative silence in college classrooms, and improve the effectiveness of college classroom teaching.