We usually say that graduate students are divided into master students and doctoral students. The undergraduate graduation exam is a master's degree, and the master graduated. If you continue to study, you will be a doctoral student, which is often called a doctor. Master's degree and doctor's degree are academic titles or academic honorary titles and academic certificates awarded by the state to individuals.

At present, the order of writing academic qualifications in China from low to high is: primary school, junior high school, technical secondary school, normal school, high school, vocational high school, high technology, technical secondary school, junior college, undergraduate, master and doctor. There are four levels of academic qualifications recognized by the state in higher education: junior college, undergraduate, master and doctor. College, undergraduate, master, doctor, doctor degree is the highest.

Candidates are considered as masters or doctors only after they have graduated, and then the masters are considered as doctors. Therefore, a master is a doctor, and only a master can read a doctor.