This invention relates to a ventilation water repellent interface with electric field, including an air channel for guiding the air of the electronic device internal into the electronic device internal; a collecting room is mounted at the right side of a U type air channel and connected with an air outlet channel to form a three-way structure; a discharging electrode mounted in the air outlet channel; and a collecting electrode is mounted in the air channel by the means of corresponding to the discharging electrode and is used for collecting the drop from the collecting electrode or the othersundries. A collecting tray is mounted at the bottom of the collecting room; a single-way valve is mounted at the bottom of the collecting tray. When the water content in the collecting tray or the collecting room is achieved to a critical pressure of the single-way valve, then the single-way valve is opened to discharge the seeper. This ventilation water repellent interface with electric field of this invention is suitable for the simple seal and complicated seal. Because of characteristics of gravitational field and electrostatic field, the ventilation water repellent interface does not change at 30 centigrade below zero to 80 centigrade in order to be more practical.