Street lamp with bulb capable of being replaced quickly

The utility model relates to a street lamp capable of quickly replacing a bulb, which comprises a lamp post, a rotating shaft is mounted in the lamp post through a worm gear in a matching manner, the worm gear is meshed with a worm, an external thread is arranged on the outer circumferential surface of the rotating shaft, and a circumferential lamp bracket seat is mounted on the outer circumferential surface of the rotating shaft through the external thread in a matching manner; a plurality of lamp holder arms are evenly installed on the outer side wall of the lamp holder base in a matched mode along the circumference, and a plurality of bulbs used for illumination are installed on each lamp holder arm. A plurality of first through grooves distributed along the circumference are formed in the side wall face of the lamp pole, and a plurality of second through grooves distributed along the circumference are formed in the portion, below the first through grooves, of the side wall face of the lamp pole. By arrang