This paper explores and analyses the meaning, necessity, feasibility and difficulty in bilingual teaching in professional courses of university, it also explores various channels and methods that overcome these difficulties and obtain better effect from such facters as teachers, teaching material, teaching method, etc. Through analyzing the other factors that influence the effect of bilingual teaching, such as the factor of students, the paper summarizes the measures in arousing the enthusiasm of bilingual study of students and promoting the research of bilingual teaching method, etc.