Supporting arm for improving stability of hanging basket

The embodiment of the utility model discloses a supporting arm for improving the stability of a hanging basket. The folding mechanism comprises folding joints mounted at four corners of an inner sideguardrail of the hanging basket operating platform, the folding joint is provided with a mounting pipe which can rotate to be vertical to a guardrail of the hanging basket operating platform; a telescopic pipe capable of stretching out and drawing back is arranged in the mounting pipe; a telescopic roller supporting rod is arranged at one end of the telescopic pipe; universal wheels are arranged at one ends of the roller supporting rods; springs for extruding the universal wheels are connected to the outer sides of the roller supporting rods in a sleeving manner; foldable supporting devices are arranged at the four corners of the inner side of the hanging basket. The folding joints rotate to be perpendicular to a guardrail of the hanging basket operating platform and are fixed, so that themounting pipe and a mecha