A semiconductor package includes a printed circuit board, a chip, a protection frame, and a covering layer. The chip is mounted on the printed circuit board and is electrically connected to the printed circuit board through a number of first bonding wires. The protection frame includes a sidewall surrounding the chip and the bonding wires and defines a number of through holes passing through an inner surface and an outer surface of the sidewall. The protection frame is filled with adhesive. The adhesive adheres to the inner surface and covers the chip and the boding wires. The covering layer is coated on the outer surface and covers the through holes.