Hello Yunpeng,   It is certainly allergy season and it is quite possible you are experiencing allergies. While online sites like Health Central are great resources for getting information to help you manage your care, they can not take the place of your doctor's solid medical advice. So the best thing for you to do, would be to check with your doctor to make sure you don't have something serious going on.   Here is some information to help you by giving you information to help you ask the right questions.   There is a great overview of allergies here, different types and causes. You can check your symptoms here in the symptoms database. You can look up treatments here in the treatments database. There is also a condition called Pink Eye or Conjuctivitis. This is a condition that can cause some of the symptoms you are experiencing and requires a visit to the doctor to confirm and treat. If you continue to have the redness and swelling, and your eyes begin to have a discharge, you definitely want to see a physician. Hope this helps! Take care and stay in touch. Let us know how you are doing!Vicki M