A card edge connector is adapted to allow an electronic module to insert and comprises an elongated insulating housing and a plurality of conductive terminals. The insulating housing has two side walls which are spaced apart from each other, the two side walls together define a card edge insertion groove which has an opening, at least one of the two side walls is a terminal mounting wall. The plurality of conductive terminals are provided to the terminal mounting wall and partially extend into the card edge insertion groove. The card edge connector further comprises a covering member which is correspondingly mounted to the terminal mounting wall, the covering member has a body and a tongue portion which is connected to the body and has flexibility, the body is mounted to the top surface of the terminal mounting wall, the tongue portion at least partially covers the opening of the card edge insertion groove, when the electronic module is inserted into the card edge insertion groove, the tongue portion contacts the electronic module and flexes toward the card edge insertion groove.