We must have a clear understanding of the degree system, especially the doctoral degree. Take Europe and America as an example. Doctor is the highest degree. But the highest degree in higher education is not just a doctor. Higher degrees in the United States and Europe can be divided into two categories: one is research degree and the other is professional degree.

In order to avoid mistakes in Chinese-English translation, this paper will directly explain these degrees with English names.

The English word for research degree is "doctor". It comes from the Latin word "doctor", which means "teacher". The word originated in medieval Europe. At that time, a "teacher" was a person's certificate to teach in a university.

First of all, the doctor is an academic research degree. Strict training and examination are needed in academic research.

A doctor must know what academic research, academic norms, academic ethics and academic services are. Under the American system, doctoral students must not only pass the most basic doctoral qualification examination, complete the fixed class hours, and achieve an average score of above B, but also conduct in-depth academic research and publish certain papers in academic journals around the world.