Take your girlfriend to the hotel. Do we both have to bring ID cards?

You need to check in when you check into the hotel, and you need both ID cards.

According to Article 6 of the Measures for the Administration of Public Security in Hotel Industry, hotels must register when they receive passengers. At the time of registration, the passenger's identity documents shall be checked and truthfully registered according to the prescribed items. To receive accommodation from overseas tourists, an accommodation registration form shall also be submitted to the local public security organ within 24 hours.

Extended data:

Article 14 of the Measures for the Administration of Public Security in Hotel Industry is the duty of public security organs to guide and supervise hotels to establish various safety management systems and implement safety precautions, assist hotels to train staff on safety business knowledge, and punish criminals who infringe upon the legitimate rights and interests of hotels and passengers according to law.

When performing official duties in hotels, public security personnel should show their certificates, act in strict accordance with the law, treat people with civility and courtesy, and safeguard the normal operation of hotels and the legitimate rights and interests of passengers. Hotel staff and passengers should give assistance.

Shizuishan Municipal Public Security Bureau-Measures for the Administration of Public Security in Hotel Industry