A cable arranging mechanism, comprising an extending plate and an auxiliary plate capable of being clamped with the extending plate, wherein the extending plate and the auxiliary plate are each provided with at least one group of a first clamping notch and a second clamping notch corresponding to each other so that when the extending plate is clamped with the auxiliary plate, the first clamping notch and the second clamping notch constitute a limiting hole allowing a cable to pass through;
- or when the extending plate is not clamped with the auxiliary plate, the first clamping notch and the second clamping notch are opened.