A card edge connector includes a body and two latches. The body includes a base and two columns. The base includes an insertion slot formed thereon, and the two columns are disposed on the base and located two opposite ends of the base. Each of the columns includes a trench connecting to the insertion slot. Two latches are respectively disposed to the two columns. Each of the fasten portions fixes one of the latches to the corresponding column, such that an elastic arm of the latch suspends in the trench of the corresponding column. The elastic arm includes an engaging portion for moving back and forth relative to the column in the trench. When a circuit board inserts into the insertion slot of the body, the engaging portions of the latches clamp the circuit board, so as to prevent the circuit board from escaping from the card edge connector.