Legal analysis: the validity period of real estate broker qualification registration is generally three years. Three months before the expiration of the validity period, the holder shall go through the formalities of re-registration at the original registration management institution. Within the validity period of registration, if a professional institution is changed, it shall go through the formalities of change in time. Re-registration, in addition to complying with the provisions of Article 17 of these Provisions, must also provide proof of continuing education and participation in business training.

Legal basis: Article 11 of the Law of the People's Republic of China on Resident Identity Cards stipulates that if the state decides to issue a new generation of resident identity cards, the validity period of the resident identity cards expires, the citizens' names change, or the documents are seriously damaged and unrecognizable, citizens should replace them. If there are errors in the registration items of citizen's identity card, the public security organ shall correct them in time, and must return the original card when issuing a new one. If a resident identity card is lost, it shall apply for a replacement.