The invention discloses a feeding device for metal smelting. The feeding device comprises a base. The four corners of the top face of the base are provided with first pneumatic cylinders, the first pneumatic cylinders are internally provided with first piston rods, and the upper portions of the four piston rods are jointly and fixedly provided with a supporting platform. A semispherical groove isformed in the center position of the top face of the supporting platform, the semispherical groove is internally provided with an arc-shaped supporting plate adapting to the semispherical groove in shape, and a hopper is arranged above the arc-shaped supporting plate. The four corners of the arc-shaped supporting plate are provided with second pneumatic cylinders, the second pneumatic cylinders are internally provided with second piston rods, and the second piston rods are fixed to supporting shafts on the four corners of the hopper. The four corners of the top face of the supporting platformare provided with hooks, the hooks are connected with elastic ropes, and the tail ends of the elastic ropes are hung and connected to the four corners of the arc-shaped supporting plate. The two corners on one side of the supporting platform are each provided with a support, and each support is connected with the two corners at one end of the arc-shaped supporting plate through steel ropes. According to the feeding device for metal smelting, the pneumatic cylinders and the piston rods are arranged and used for lifting the hopper, and time and labor are saved; and the arc-shaped supporting plate is used for sliding to change the horizontal levelness of the hopper, and discharging is facilitated.