After the new two-child birth policy is officially implemented, couples who have a second child do not need to apply for a birth certificate, but only need to complete the birth registration of the second child. The practice of birth registration of two children may be different in different places. However, as a couple who want to have a second child, they can go to the local township or street family planning office for birth registration first, provide ID card, marriage certificate and household registration book, and fill out the birth registration form, but they need to do it in person, because the registration form must be signed by the promisor.

Legal objectivity:

Article 18 of the Population and Family Planning Law The state encourages a couple to have two children. Those who meet the requirements stipulated by laws and regulations may ask for another child. Specific measures shall be formulated by the people's congresses of provinces, autonomous regions and municipalities directly under the Central Government or their standing committees. Ethnic minorities should also practice family planning, and the specific measures shall be formulated by the people's congresses of provinces, autonomous regions and municipalities directly under the Central Government or their standing committees. If the provinces, autonomous regions and municipalities directly under the Central Government where the husband and wife are registered are inconsistent, the principle of benefiting the parties shall apply.