1. If it is only a simple stroke, it does not damage the chip on the passport and does not affect the reading of the chip, then it can continue to be used.
2. If it is damaged, or you want to exchange it for a new one, you can go to the exit-entry administration office for consultation. The old passport needs to be cut and invalid, and the new passport needs to be taken with you to the entry-exit management office for processing.
In short, if the passport information page has traces but does not affect the use, you can continue to use it. If you need a new passport, you need to consult with the entry-exit administration office. When using your passport, you are advised to protect it to avoid damage.