The invention discloses a torsional spring clamp assembling machine, which comprises a machine frame, wherein an installing bottom plate is arranged on the machine frame; a feeding rail and an assembling groove are arranged on the installing bottom plate; a torsional spring input device is arranged above the assembling groove; a torsional spring foot opening device used for opening the two feet of a torsional spring to form a clamp sheet installing inlet is arranged in the assembling groove; the output end of the feeding rail is a reduced opening output groove; a position limiting block is connected onto the reduced opening output groove; the position limiting block and the reduced opening output groove form a clamp sheet opening; the clamped sheet opening is matched with the size of the clamp sheet installing inlet formed by opening the two feet of the torsional spring; a clamp sheet arrangement input device enabling two clamp sheets to parallelly fall into the feeding rail is arranged above the feeding rail; a push conveying plate moving along the feeding rail is arranged in a feeding rail inlet position. Therefore the technical effect of automatic assembly is achieved, so that the assembling efficiency is improved; the production cost is reduced.