Legal analysis: 1, the validity period required for real-name authentication is the validity period of resident ID card. 2. The validity period of the ID card refers to the period from the time of issuance to the end of the ID card use period. China's citizen ID cards are valid by age group, and the resident ID cards of citizens over 16 are valid for ten, twenty and twenty years.

Legal basis: Article 5 of the Law of the People's Republic of China on Resident Identity Cards. The validity period of the resident identity card of citizens over the age of 16 is divided into ten years, twenty years and long term. Sixteen to twenty-five years old, issued a resident identity card valid for ten years; Twenty-six to forty-five years old, issued a valid identity card for twenty years; Those over 46 years old will be issued with long-term valid identity cards. Citizens under the age of sixteen who voluntarily apply for a resident identity card shall be issued a resident identity card valid for five years.