If you need to apply for the college entrance examination after losing your identity card, you can apply for temporary id card. Temporary id card is a valid identity card, which can be used to prove citizenship.

Measures of People's Republic of China (PRC) Municipality on the Administration of Temporary Resident Identity Cards

Article 2 China citizens living in People's Republic of China (PRC) who urgently need to use their resident identity cards during the application for renewal or replacement may apply for temporary resident identity cards.

Article 3 Temporary identity cards have the legal effect of proving citizenship.

Tenth temporary identity cards issued by the public security organs of the people's governments at the county level where citizens' permanent residence is located.

Article 11 When applying for a temporary resident identity card, a citizen shall submit a residence booklet and a recent one-inch bareheaded black-and-white photo of himself, and indicate it in the Registration Form for the Application of Resident Identity Card.

Article 12 When a citizen applies for a temporary resident identity card, the public security organ shall handle it in a timely manner in accordance with the provisions of these Measures, and issue the temporary resident identity card to the applicant within three days after accepting the application.