The utility model discloses a device for magnetic control water oil separating, its characterized in that includes electromagnet, bracket rails, a pallet, bracket rails set up to be in the support bench, bracket rails can the support platform reciprocate with can be around a pallet water plane rotation, electromagnet set up to be in bracket rails on, electromagnet can be on bracket rails horizontal migration, electromagnet include direct current solenoid, stainless steel interlayer and rings, direct current solenoid external sheath stainless steel interlayer form one discoid, direct current solenoid and contact department of stainless steel interlayer glue sealed fixing with sealed. This device utilizes field control magnetism oil absorption material, and can be simple and convenient separate the wide surface of water of magnetic adsorption material follow has improved the work efficiency who retrieves oil -water separation material, exempt the artifical work of carrying out the removal of materials to the surface of water, reduced operating personnel's intensity of labour and safe risk.