The invention relates to a screening device, in particular to a screening device of iron ores for metal smelting. According to the screening device of the iron ores for metal smelting, the operation is simple and reliable, environmental influence is small and screening accuracy is high; the screening device of the iron ores for metal smelting comprises supporting legs, first connecting rods, a screening mechanism, a screening frame, a filter screen plate, a guide frame, a pouring mechanism, a first placing plate, a first collecting box, a second placing plate and the like; the first connectingrods are arranged on the left side supporting leg and the right side supporting leg, the screening mechanism is installed on the first connecting rods, the screening frame is arranged on a moving part of the screening mechanism, and the filter screen plate is arranged inside the screening frame. The screening device of the iron ores for metal smelting has the beneficial effects that through mutual cooperation of the screening mechanism and the pouring mechanism, the iron ores placed in the screening frame are screened, and meanwhile, optimization of a spraying mechanism and a descent controlmechanism is utilized, so that the effects that operation is simple and reliable, the influence on the environment is small, and the screening accuracy is high are realized.