The invention discloses a multifunctional waterproof garden lamp, comprising a lamp pole and a lamp cap. The lamp cap comprises a lampshade. The lampshade has an LED lighting module therein. The lampshade comprises a plurality of light transmissive windows. Each light transmissive window is provided with light transmitting glass. The top of the lampshade includes a plurality of inclined surfaces,and each inclined surface has a solar cell panel. The lampshade is also internally provided with a controller and a storage battery. A water pipe is arranged in the lamp pole. The top end of the waterpipe has a nozzle passing through the side wall of the lamp pole, and the bottom end has a water inlet pipe. The water pipe has a liquid pump therein. The garden lamp is multifunctional and has a waterproof effect.