Bank loans will not detain ID cards, just show your ID cards. Except for compulsory measures taken by public security organs, it is illegal for any organization or individual to confiscate other people's identity cards. If the identity card is seized, you can report it to the public security organ.

legal ground

Article 15 of the Law of the People's Republic of China on Resident Identity Cards

No organization or individual may detain a resident identity card. But the public security organs in accordance with the "People's Republic of China (PRC) Criminal Procedure Law" to implement residential surveillance compulsory measures except.

Sixteenth one of the following acts, given a warning by the public security organs, and impose a fine in 200 yuan, illegal income, confiscate the illegal income:

(a) using false certification materials to defraud the resident identity card;

(2) Renting, lending or transferring a resident identity card;

(3) illegally detaining another person's identity card.