A card edge connector includes an elongated housing having an upper face, a lower face and a mating groove defined therebetween and extending along a longitudinal direction. A plurality of terminal grooves are respectively defined between the upper face and lower face and in communication with the mating groove. A plurality of contacts are respectively received in the terminal grooves. Each contact includes a body portion, at least one retaining portion, a contacting portion and a soldering portion. The at least one retaining portion forms at least one barb thereon and is inserted into the terminal groove with the at least one barb interfering with an inner wall of the terminal groove until the at least one barb falls into a through hole defined on the inner wall of the terminal groove.