The utility model relates to a suspending device for a sunshade curtain of an automobile, comprising a fixing plate which is correspondingly fixed on the top plate of an automobile, a plate-shaped clamp base which is installed on the fixing plate, and a hook holding element which is fixed on sun cloth and can be clamped and hooked on the clamp base. The fixing plate and the clamp base are provided with a fixed chute and a clamp inserting part that are mutually clamped and inserted. The clamp base can be moved along the chute through the matching of the chute of the fixing plate and the clamp inserting part of the clamp base, and a clamp part which is used for hooking and fixing the hook holding element is arranged on the clamp base. The suspending device has the advantage of convenient assembly, and the clamp base can be flatly arranged at the head plate of the automobile. The utility model can use safely when the sunshade cloth is maintained in the state of opening.