1, academic background and achievements: doctoral applicants need to have a master's degree or equivalent, and have excellent academic performance in master's studies, that is to say, their achievements are in the forefront or their average GPA reaches a certain standard.

2. Research ability and achievements: Applicants need to actively participate in scientific research activities and obtain certain scientific research achievements, including publishing academic papers, participating in scientific research projects, obtaining patents or other forms of scientific research achievements.

3. Letter of recommendation: There must be two experts with professional and technical positions above associate professor related to the applied subject. These letters of recommendation should prove the applicant's academic ability and research potential.

4. English ability: Kaobo has high requirements for English, which is equivalent to the national level 6. Specific requirements include specific listening materials, accuracy of answering questions and vocabulary reserve.

5. Physical and mental health: Applicants need to meet the physical examination requirements stipulated by the admissions unit, ensure physical and mental health, and be competent for doctoral study and scientific research.