Is it legal for the hotel to get an ID card?

Legal analysis: generally, you need to register your ID card when staying in a hotel, but you don't need to take photos. If I were you, I would ask him to give me a reasonable explanation and then call the police.

Legal basis: Article 5 of People's Republic of China (PRC) National Identity Card Law states that the validity period of resident identity cards of citizens over 16 years old can be divided into ten years, twenty years and long term. 1, 16 to 25 years old, and issue resident identity cards with a validity period of 10 years. 2, 26 years old to 45 years old, issued a valid ID card for 20 years. 3, more than 46 years of age, issued a long-term valid identity card. 4. Citizens under the age of sixteen who voluntarily apply for resident identity cards shall be issued with resident identity cards valid for five years.