Different libraries may have different overdue charges, and the specific charges and whether there is an upper limit need to refer to the regulations of the library. Taking Beijing as an example, according to the Implementation Measures of Beijing Library Regulations, the daily fee for overdue 10 days is 0.2-0.5 yuan, and the daily fee for overdue 10 days or more is 0.5- 1 yuan. The specific charging standards shall be formulated by the library according to the above provisions and publicized to readers.