Based on the self-built Multimodal Corpus of Academic Spoken English, nonverbal characteristics of Chinese science and engineering majors are studied by using multimodal interaction analysis method, focusing on nonverbal modal configuration, modal features and modal coordination. Results show that eye contact and intonation are high-intensity modes, which are complimentary to the main mode. Gesture, facial expression, body movement and head movement are secondary modes, among which gesture strengthens the main mode and the other modes overlap with the main mode. Chinese science and engineering majors tend to form nonverbal communication through intonation and eye contact, and consciously use gestures to strengthen spoken English expression, but certain cases of flat tone, unnatural facial expressions, rigid body movements and lack of emotion could be found.