What's the name of this bug at home now? What should I do?

According to the photos you provided, this bug is a bookworm, a common indoor insect. Booklice like to live in a humid environment, feeding on starch, fungi, algae, lichens, organic scraps of fungi and wood, and starchy household items such as cereals, wallpaper glue and book binding.

To solve this problem, the following measures can be taken:

1. Cleaning the room: remove dirt and sundries in the room and keep the room dry and clean.

2. Repair wet places: such as bathrooms, kitchens, basements and other places that are easy to be wet, repair water leakage and keep dry.

3. Use pesticides: you can use booklice to spray pesticides. Pay attention to the instructions and pay attention to safety.

4. Prevent booklice from breeding: booklice breed quickly, and can be prevented from breeding by controlling humidity and keeping clean.

In a word, in order to prevent and treat this kind of insect, it is necessary to keep the room dry and clean, repair the wet place and treat it with pesticides to prevent its reproduction.