I have Austrian passport but I live in Iran !

It's possible to apply from there. You can go to the embassy to submit the required documents. Before going there, you had better call the embassy to make sure that it will deal with your application. The basic documents include your passport, a copy of passport, a fully completed application form, a recently-taken bare-headed photo, the original and photocopy of your residence permit in Iran, and some supporting documents to justify your visiting purpose.