1. academic background: consider your major and research direction, understand the latest development and frontier issues in this field, and accumulate relevant academic experience and research results.
2. Language ability: If your mother tongue is not the official language of your country, you need to have the corresponding language ability, such as passing TOEFL, IELTS and other tests to get proof.
3. Academic requirements: Understand the requirements of the country or region where you are located for doctoral enrollment, including minimum degree, credit requirements, research plan, etc.
4. Application materials: prepare application materials such as resumes, letters of recommendation, research plans and papers, and pay attention to the translation and format specification of the materials.
5. Preparation: According to the requirements of the doctoral entrance examination in the country or region, prepare relevant examination subjects and contents, and conduct systematic review and practice.