The utility model provides an install courtyard LED lamp fast belongs to courtyard LED lamp field, it has solved the problem that current courtyard LED lamp fixing is troublesome and the radiating effect is poor. The utility model discloses a cylindrical lamp pole, the lamp post top end external diameter is less than lamp pole bottom external diameter, lamp post top end is even transition structure to the bottom outer wall, include still that the inner wall is the round shell -like lamp shade of flaring structure, the lamp shade is made for aluminium saw lumber material, and the lamp shade cover is on the lamp pole, lamp shade top outer wall turns up and forms ring shape lamp plate, and the lamp plate bottom surface is fixed with the LED lamp, be equipped with the busbar that communicates with the power along the lamp pole outer wall between lamp post top end and the bottom, the lamp shade inner wall is equipped with the conducting strip with LED lamp intercommunication, and when the lamp shade overlaps on the lamp pole, busbar and conducting strip contact, and make the LED lamp electrically conductive. The lamp shade can be installed according to predetermineeing fast to this courtyard LED lamp, has fine decorative and better radiating effect simultaneously.