To provide a field emission electron source, and to provide a method of manufacturing the same.

The field emission electron source includes: an insulation substrate; a plurality of grid electrodes and a plurality of negative electrodes arranged on the insulation substrate; and a plurality of electron emission units. The plurality of grid electrodes and the plurality of negative electrode intersect with each other to form a plurality of gratings; one of the electron emission unit is installed in each grating; each electron emission unit includes at least one electron emitter; both ends of the electron emitter are respectively electrically connected to the grid electrode and the negative electrode; the electron emitter has a space; the electron emitter has two tips facing each other in the space; and each of the tips includes a plurality of electron emission tips. This invention also provides the method of manufacturing the field emission electron source.