As is known to all, language is the most important communicational tool of human beings. To exchange information with spoken language is called verbal communication. But there is another way of exchanging information, which is being used all the time, but is often neglected, that is nonverbal communication. Body language is a main part of nonverbal communication, and many social occasions need body language. Meanwhile, body language also takes a complementary and irreplaceable role to help people transfer information to better understand communication, which will be an indispensable power to break up language obstacles in practice.