Postgraduates refer to academic qualifications, including master students and doctoral students, and master students and doctoral students refer to degrees. In other words, a master's degree or a doctor's degree is only considered as a master's degree or a doctor's degree. A master is a doctor, so the level of a doctor is one level higher than that of a master, and only a master can study for a doctor.

Doctor of extended information is a degree that marks a person's ability to produce original results or academic ability, and it is the highest degree at present. Having a doctor's degree or equivalent means that a person has the ability to enter the academic stage from the learning stage. The ability to produce original results or academic ability is the core connotation of doctoral degree, and it is also the most essential feature of people with doctoral degree.

A master's degree is a postgraduate degree between a bachelor's degree and a doctorate. A master's degree usually symbolizes the ability to think independently according to his concentration and research field.

Reference doctor (graduate degree) Baidu Encyclopedia