If your ID card is lost, you should first report it to the local public security agency as soon as possible and apply for a temporary ID card. Without an ID card, you may not be able to enter some places that require identity verification, such as banks, hotels, airports, etc. It is recommended to check with the relevant venue in advance whether other valid documents can be used as a substitute, or contact family or friends for help first. At the same time, while waiting for the temporary ID card, pay attention to keeping other important personal documents and belongings.