Q: What is the difference between PhD candidate and PhD student?

A1: During the studies that lead to the degree, the student is called a doctoral student or PhD student; a student who has completed all of their coursework and comprehensive examinations and is working on their thesis/dissertation is sometimes known as a doctoral candidate or PhD candidate.

A2: A candidate is someone who has fulfilled all the requirements for the degree except the dissertation.

【PS】I wanna give you guys an advisable suggestion, DO NOT RUSH INTO MAKING A DECISION BEFORE APPLYING FOR A PHD!

没拿到博士学位前，不要自称“博士”，“Dr.”！学历只是硕士！只是PhD student而已，甚至没达到PhD candidate的要求，没有学位就没有头衔！Mr.而已...