An audio jack connector includes an insulating housing which has a base body defining a holding cavity in a bottom thereof and an inserting body defining an inserting chamber, a plurality of electrical terminals disposed in the base body, a fixing member fastened in the holding cavity of the insulating housing to cover and hold the electrical terminals in the base body, and a sealing tape covering under the fixing member and adhered outside the insulating housing and the fixing member to seal up splicing gaps between sidewalls of the holding cavity and peripheral edges of the fixing member. So the audio jack connector can effectively prevent the water vapor and dust passing through the inserting chamber onto a printed circuit board of an electronic product where the audio jack connector is used.