A design and implementation method of a fuzzy decoupling controller of an alcohol distillation column is introduced, which applied to a sieve plate alcohol distillation column experimental device according to the temperature control loops of the column top and the column bottom have strong coupling in the alcohol distillation process. The experiment result shows that the control system can realize the demand of decoupling control. It has great advantages in product quality and energy consumption reducing by comparing with the conventional double independent PID loops,