The invention discloses a lamp post capable of being provided with a communication module for a smart city. The lamp post comprises a lamp post body. Air inlets are formed in the side wall of the lamppost body, a top cover is fixed to the top end of the lamp post, a cooling fan and an upper round plate are mounted in the lamp post body, the upper round plate is fixed to the inner side wall of thelamp post body, an annular fixed plate is further arranged between the upper round plate and the cooling fan and provided with multiple first through holes, a mounting barrel is fixed to the inner circumference of the annular fixed plate, a lower round plate is fixed into the mounting barrel, and multiple inverted-L-shaped air outflow pipes are connected to the side wall of the mounting barrel; an annular sliding groove is further formed in the inner side wall of the lamp post body, multiple sliding blocks are arranged in the sliding groove, the multiple sliding blocks are all fixedly connected with an annular movable plate, and the annular movable plate is provided with multiple second through holes. Multiple electronic modules can be mounted in the lamp post, and the cooling efficiencyof the multiple electronic modules can be adjusted.