It was reported that the teenage boy was cycling along Canterbury Road near the junction with Quex Road at around 8.20am on Tuesday 10 November 2020 when the incident took place.
A man got out of a BMW car and shouted at the victim to hand over his bicycle.
The suspect followed him for a short distance on foot but stopped and the victim was able to cycle away from the scene.
The suspect was described as a black man aged between twenty and thirty years old, with a natural afro hairstyle and dressed in black.
Anyone with information about the attempted robbery should call Kent Police on 01843 222289 quoting 46/201674/20.