The invention provides an online feeding mechanism based on industrial machines. The online feeding mechanism comprises a hollow box, an electric telescoping rod, a push plate, a first spring, a middle plate, a sleeve, a roller and a telescoping rod. The middle plate is assembled in the hollow box, the lower end of the electric telescoping rod is fixed to the lower end surface in the hollow box, and the upper end of the electric telescoping rod is installed in the middle of the lower end surface of the middle plate. The upper end of the first spring is installed on the lower end surface of thepush plate, the lower end of the first spring is installed on the upper end surface of the middle plate, and due to the design, the aim that materials are stably pushed by means of the feeding mechanism is achieved; the sleeve is installed on the lower end surface of a top plate, the upper end of the telescoping rod is installed in the sleeve, the lower end of the telescoping rod is provided witha roller base, the roller is installed in the roller base through a rotary shaft, and due to the design, the aim that the materials are protected by means of the feeding mechanism is achieved. The online feeding mechanism is convenient to use, convenient to operate, good in stability and high in reliability.