Waterproof LED decorative bulb

A waterproof LED decorative bulb, comprising a lampshade (1), a horizontal first circuit board (2) horizontally placed at an inner bottom of the lampshade, and a plurality of mounted LED luminous bodies (3) arranged on the first circuit board, wherein a bottom surface of the first circuit board is connected with two hard vertical conductive pins (4), underneath of the two conductive pins is electrically connected with a vertically placed second circuit board (5), the second circuit board is provided with a mounted resistor and an LED driving chip, a lower end of the second circuit board is electrically connected with two electrodes, one of the two electrodes is a hard vertical pin-type electrode (6) and the other thereof is an upward-bending conductive wire (7), underneath of the conductive pins is provided with a silicone cushion (8), a bottom of the lampshade is provided with an outer threaded connection portion (9) which is in threaded connection with a metal connecting base (10), the first circuit board, the second circuit board and the silicone cushion are enclosed within the lampshade and the metal connecting base, an inner bottom of the lampshade and an inner wall of the metal connecting base fix the first circuit board, the second circuit board and the silicone cushion in position therebetween, each of a side wall (11) and a bottom (12) of the metal connecting base is a contact electrode, a bottom of the silicone cushion is fitted with an inner bottom of the metal connecting base, the pin-type electrode pierces through the center of the silicone cushion and extends out of a through hole at the bottom of the metal connecting base to form an extending portion (13), the extending portion and the bottom of the metal connecting base are connected by soldering tin, the conductive wire is contacted with an inner side wall of the metal connecting base, an engagement portion between the lampshade and the outer threaded connection portion is provided with a waterproof groove (14), and the waterproof groove is internally provided with a waterproof rubber gasket (15).