The invention relates to a method for processing organic wastewater by azeotropy-steam distillation. The method is characterized by using the azeotropy-steam distillation method to heat directly by adding a rimming agent and steam so that organic matters and water in the wastewater form gas azeotrope and is then separated through condensation, therefore, the purpose of processing wastewater is achieved. The method is simple and economical, has the advantages of large operational flexibility and wide adaptability and is an effective method for processing organic wastewater.