A magnet assembly apparatus for obesity treatment and a use method of the same are disclosed. The magnet assembly apparatus for obesity treatment according to the present invention is a magnet assembly apparatus for obesity treatment which can be injected by an oral approach into the stomach of a patient. The magnet assembly apparatus comprises a first sphere having a first diameter and silicon-coated on the outside； and a second sphere having a second diameter bigger than the first diameter, which is a magnetic substance having a magnetic force of a predetermined value.
