A car first aid kit is a first aid kit designed for vehicle drivers and passengers. It contains basic medical supplies and tools needed to respond to traffic accidents and other emergencies. Here are some application scenarios and recommended items for car first aid kits:

Application scenarios:
1. Traffic accidents: Provide first aid in accidents such as vehicle collisions or rollovers.
2. Injury treatment: Such as cuts, abrasions, fractures, etc.
3. Burn treatment: First aid for burns in the event of a vehicle fire or explosion.
4. Poisoning treatment: Such as inhalation of toxic gases or accidental ingestion of toxic substances.
5. Heat stroke and hypothermia: First aid measures in extreme weather conditions.
6. Cardiac first aid: First aid for cardiac arrest or heart attack.
7. Respiratory problems: First aid for difficulty breathing or suffocation.
8. Shock state: First aid for shock symptoms due to injury or illness.

Recommended items to include:
1. Band-Aids and bandages: Used to cover and bandage wounds.
2. Medical tape: used to secure bandages or other dressings.
3. Disinfectants: such as iodine or alcohol cotton balls, are used to clean wounds.
4. Tourniquet: used to control severe bleeding.
5. Hemostatic dressing: such as combat dressings, is used to stop bleeding quickly.
6. Ice packs or cold packs: used to reduce swelling and pain.
7. Painkillers: such as ibuprofen or acetaminophen, are used to relieve pain.
8. Antihistamines: used to relieve allergic symptoms.
9. Anti-shock drugs: used to treat shock symptoms.
10. Personal protective equipment: such as disposable gloves, masks, etc.
11. Safety scissors: used to cut open clothing to treat wounds.
12. Flashlight: provides lighting at night or in low visibility.
13. Reflective vest: improves your visibility when dealing with accidents.
14. Emergency contact information: including contact information of family members, doctors, and insurance companies.
15. First aid manual: provides basic first aid knowledge and skills guidance.

The first aid kit for a car should be customized according to personal needs and the vehicle usage environment to ensure that it can provide effective help in an emergency. At the same time, check the items in the first aid kit regularly to ensure that they are in good condition and replace expired medical supplies in time.