China's higher education is divided into three levels: junior college, undergraduate and postgraduate, with postgraduate education as the highest, but postgraduate students can be divided into master students and doctoral students according to their degrees, and doctoral students are the highest education level in higher education. When a doctoral student graduates, he can get a full-time doctoral diploma and a doctoral degree certificate.

Those who study for a doctoral degree on the job with the same academic qualifications can only obtain a degree certificate, and their academic qualifications are still the same, such as undergraduate or master's degree.

Introduction to doctoral students:

Doctoral students, that is, graduate students studying for doctoral degrees, are the highest level of postgraduate education. In people's daily life, they are admitted to doctors, read doctors and so on. Refers to a doctoral student. Strictly speaking, students who have not obtained a doctorate can only be called doctoral students; Only those who get a doctorate are real doctors.

Therefore, according to international practice, in formal occasions, only those who have obtained a doctorate can be crowned with the title of "doctor"; This restriction can be waived in informal situations.