Closed foreign language training is suitable for the following three types of scholars: first, people who are eager to improve their foreign language ability, such as white-collar workers and newly graduated college students. Closed courses for these people focus on foreign languages in business, tourism, hotels, foreign trade, IT, law and other industries, and improve their foreign language level through closed centralized training, so as to increase their competitiveness for career development or job hunting. Second, people who want to go abroad need to strengthen their language, including studying abroad, working, emigrating and tourists. The closed courses for these people mainly focus on studying abroad language examination counseling and life-oriented foreign language training, teaching students various foreign life scenes, such as renting a house, shopping, interviewing, etc. Third, students who want to improve their spoken English can participate in closed English summer camps and other activities during the winter and summer vacations.