The state has no policy on "doctoral thesis". According to national regulations, at present, only graduate students with the same academic qualifications apply for doctoral degrees. Applicants for doctoral degrees should not only accept papers and organize defense, but also conduct a comprehensive review to assess their professional theoretical basis, knowledge structure, academic level, foreign language level and scientific research ability. Only when all the students have passed the examination can the examination papers be examined and answered. You can't get a doctorate just by a thesis.