The invention provides an asphalt stabilized cold recycled mixture vibration molding instrument and a test piece molding method, belongs to the technical field of test apparatus or equipment for road materials, and particularly relates to a simple asphalt stabilized cold recycled mixture vibration molding instrument and a vibration molding method thereof. According to the molding instrument, a hoisting device is mounted at the upper end of a framework; vertical sliding rails are mounted on the side surfaces of the frame; supporting frames are mounted on the vertical sliding rails; an impulsive vibration device is mounted on the supporting frames; the upper end of the impulsive vibration device is suspended on the hoisting device, and a vibration pressure head at the lower end of the hoisting device directly faces a vibration test mould; the vibration test mould is fixed to a bearing platform at the lower end of the framework. The molding instrument is convenient to use, easy to operate, and high in test efficiency; a test piece performance testing result obtained through the vibration molding instrument can more objectively reflect the performance of a compacted asphalt mixture.