The doctor's provident fund in Xuzhou is 20%. According to the Regulations on the Management of Medical Staff Provident Fund, the proportion of medical staff provident fund established by medical institutions is generally 20%, in which the proportion of medical staff in medical institutions paying provident fund is 10%, while the proportion of institutions paying provident fund is 10%. In addition, according to the Regulations on the Management of Medical Staff Provident Fund, medical staff can voluntarily pay a higher proportion of provident fund, with the maximum proportion not exceeding 20%.