With "the Belt and Road Initiative", it is important to integrate professional education with language education in bilingual teaching reform of soil mechanics course. According to the bilingual teaching practice of soil mechanics, smart classroom mode is proposed to improve teaching by learning. With the preparation before class, case teaching and group study on class, feedback after class, realize teaching interaction; integrate the classroom teaching space with extracurricular teaching space; develop an intelligent learning environment. The realization method of curriculum resources, teaching materials and teaching staff construction was elaborated. Therefore, with the comparison before and after bilingual teaching, bilingual teaching inspired the students’ learning potential, improved the students’ professional ability and English level, and realized the integration of professional education and language education.