A hot-melting detaching mechanism comprises an upper heating assembly with a product attraction device, a lower heating assembly with a product attraction device, and a stripping assembly arranged beside the lower heating assembly, wherein the upper heating assembly is connected with a pulling device. When a product is heated to a specific temperature, glue viscosity is reduced, a screen of the product is pulled upwards by the pulling device, a horizontal moving device drives the lower heating assembly to move horizontally, and the screen and a shell are torn off to form a gap; a stripping cutter in the stripping assembly extends into the gap and is matched with the upper heating assembly and the lower heating assembly to move, and the screen and the shell are detached and separated. In the detaching process, the tension pressure of the upper heating assembly is detected through a tension sensor, and the product is effectively prevented from tearing damage; through thermoelectric coupling, hot-melting temperature is controlled, and a battery assembled in the product is prevented from explosion, and the detaching success rate is increased. The hot-melting detaching mechanism is high in universality and suitable for products of different sizes.