Degree certificates refer to bachelor's degrees, master's degrees and doctor's degrees. The degree certificate is obtained after the completion of the course, passing the degree English test, writing a thesis and defending the thesis. The diploma is the proof that you have completed all the courses, which means that you have already had the learning experience of all the courses in this major.
Generally, it is because the course is full, but not all subjects are qualified, and the credits can not meet the requirements for obtaining a degree certificate. Each school has different requirements for each major, but there are mainly the following situations: 1 required subjects must pass the customs. Some subjects that require a degree certificate must pass, for example, a bachelor's degree requires English to pass Band 4, and writing papers and thesis defense must pass or higher requirements; 2 Re-examination can't exceed 3 subjects, and some schools will require that "failing subjects" can't exceed how many; 3. Cheating in exams, violating criminal law and other major violations of discipline and law.