Free rural doctors referred to those who were engaged in medical work in rural areas and enjoyed national preferential policies. Whether they could take the postgraduate entrance examination after graduation depended on the regulations of the country or region where they were located. Generally speaking, free rural doctors could choose to continue their studies or engage in medical industry-related jobs according to their interests and conditions after completing their medical work. The postgraduate entrance examination was a good choice. It could help the free rural doctors improve their professional skills and knowledge to better serve the rural people. However, the specific rules and conditions may vary from country to country or region. Therefore, you need to check the relevant notices and regulations of the local government or health institutions to understand the specific details and requirements of whether the free rural doctors can take the postgraduate entrance examination after graduation.