You need to go to the customer service center of Youbei Parent-child Library for a refund. Official website of Youbei Payroll Library shows that if you know that your library card needs to go to the customer service center of the library to refund the deposit, you need to bring the deposit receipt and the reader's library card. When a reader does not borrow books from the library, he needs to return the library deposit. Founded in 2009, Youbei Parent-child Library is an offline professional reading organization that provides reading planning, guidance and services for parent-child families, and is the first professional organization in China to promote parent-child reading.