When looking for an internship unit, college students should have a basic inspection of the corresponding unit, and don't believe one or two advertisements on campus. College students' summer internship is now a vague concept in law. "Internship" has not been defined as the object of labor law, and many units have taken advantage of the law. In this case, college students should learn to protect themselves by law. A labor contract or labor service contract should be signed with the employer to clarify the rights and obligations of both parties. Although it is short-term, it is necessary to have this procedure.