A decorative light includes a light source, two wires, a socket and a shade. The wires have top ends electrically connected to a bottom of the light source by welding. The socket is coated around the bottom of the light source and the top ends of the wires by injection molding. The shade covers the light source and is detachably mounted on the socket. The decorative light can provide a good waterproof effect because the socket seals an opening of the shade to prevent water from infiltrating inside the shade and damaging the light source. Besides, users can change shades having different shapes freely to make the decorative light attractive and interesting.