Does peroxide helps ear infection?

No: Don't put peroxide in your ear. If you have a perforation you may cause more harm than good. If you have an ear infection see your doctor and get some antibiotics.

See your doctor: You should see your doctor so he or she can take a look in your ear and make sure nothing else is going on. You may need antibiotics or further testing. Until you can see your doctor, you can try taking ibuprofen, naproxen, or Acetaminophen for pain relief (unless you have been told not to take these medications by your doctor in the past).

Decongestants: Assuming you have seen a doctor for abx, you can also use a decongestant nasal spray to help "drain" or relieve the pressure in your ears via the eustachian tube. An oral decongestant may also help. For mild pain control, over-the-counter meds will work. If you have intense fevers, severe headaches, ear drainage, a stiff neck, dizziness, or facial weakness you should see your doctor immediately.

No: Peroxide will turn to water after it bubbles off its oxygen. It then creates a moist setting that allows germs to thrive & cause a canal infection.