Method for producing highly pure diaryl carbonate

A method for continuously producing high-purity diaryl carbonate, the method for industrially producing high-purity diaryl carbonate and comprising:

• a first purification step of continuously introducing a mixture containing diaryl carbonate to a purifying column A having a side cut discharge port, and continuously separating by distillation the mixture into a column top component (At), a side cut component (As) containing diaryl carbonate, and a column bottom component (Ab) containing a catalyst;
• and
• a second purification step of continuously introducing the side cut component (As) to a diaryl carbonate purifying column B having a side cut discharge port, and continuously separating by distillation the component into three components, a column top component (Bt), a side cut component (Bs), and a column bottom component (Bb), thereby obtaining high-purity diaryl carbonate as the side cut component (Bs).