To provide a lightweight simple long-time mountable individual defense device constituted of a face shield and a head and neck cover for individual defense preventing the penetration of a splash and fine particles and easily attached and detached by one's own effects.

The individual defense device is constituted of the face shield 2 equipped with a negative pressure ventilator 3 and the head and neck shield 1 and exhausted by an in-hub type electromotive fan driven by a dry cell or a button battery. An exhaust system crosses a rotary blade or made parallel to the rotary blade and a suction device is a device using the head and neck shield and the material of individual defense clothing themselves as a filter medium (filter). Another filter is not mounted on the suction side.