The invention relates to a polyethylene material capable of adsorbing metal, which comprises the following raw material components: polyethylene, nickel cobalt ferrite, iron-silicon-aluminum-loaded nylon fiber, ferroferric oxide-loaded iron, diphosphorous acid pentaerythritol ester diisodecyl ester and calcium stearate. The nickel cobalt ferrite is prepared through reaction of ferric chloride, cobalt chloride, nickel chloride, urea and ammonium bicarbonate; the iron-silicon-aluminum-loaded nylon fiber is prepared through reaction of nylon fiber, ferrous acetate, aluminum acetate, silica powder, benzene and calcium; and the ferroferric oxide-loaded iron is prepared through reaction of iron acetate, iron powder, water, formaldehyde and octanol. The polyethylene material provided by the invention has excellent metal adsorption performance and mechanical property.