Diagnosis apparatus for alzheimer's disease and method of diagnosing using the same

A diagnostic device for Alzheimer′s disease is provided. The diagnostic device comprises a bar type image probe which is inserted into the nose and one end of which is in contact with an olfactory epithelium tissue part to obtain signals about the condition of the olfactory epithelium tissue part; a transmission means which transmits the signals by being connected to the other end of the bar type image probe; and a signal processing unit which converts the signals transmitted by the transmission means into digital signals.