The invention discloses a full-automatic electrostatic elimination method based on down feather separation and relates to the technical field of down feather separation. The electrostatic eliminationmethod comprises the following steps of pretreatment, equipment treatment, electrostatic treatment and drying treatment. The method is used for replacing a traditional separation electrostatic elimination method, and the problems are solved that under the condition of long separation processing time, down feather generates more electrostatic electricity, the down feather is attracted to feather and difficultly separated from the feather, the separation efficiency of the down feather is lowered, and the energy consumption is increased. Through cooperation of steam and mist of an electrostatic treatment solution, the steam and mist can be bonded to dust generated through down feather separation, so that the dust falls into the bottom of a separation box, and the separation efficiency and hygienic quality of the down feather are further improved. After separation, the down feather is soaked, and the anti-electrostatic capacity of the down feather is improved. According to the method, full-automatic electrostatic elimination is achieved, the separation efficiency is high, and the anti-electrostatic capacity of the down feather is further enhanced.