To provide an electron emission device and a manufacturing method of it wherein focusing property of emitted electrons is improved and simplification of a manufacturing process becomes possible.

The electron emission device includes a substrate 2, a first electrode 3 arranged on the substrate 2, a second electrode 6 which is arranged on the first electrode 3 via a first insulating layer 4, selectively covers the first electrode 3, and in which a plurality of first opening parts 13 are arranged so that the first electrode 3 is exposed, a protective layer 7 arranged on the second electrode 6, a third electrode 9 which is arranged on the protective layer 7 via a second insulating layer 8 where a second opening part 14 is arranged so as to be communicated with the first opening parts 13, and an electron emitting part 5 arranged in the first opening part 13 region on the first electrode 3.