To provide a light-emitting device capable of attaining low power consumption, high light-emitting efficiency, and long life.

The light-emitting device includes an airtight container 1 wherein a gas is enclosed, an electron source 2 supplying electrons for making the gas excited into the airtight container 1, an anode electrode 3 oppositely arranged on the electron source 2, a phosphor layer 4 arranged at an inner surface side of the airtight container 1 and light-emitting by being excited with excitation light made of light emitted from a light-emitting process of the excited gas, and a control device 5 for controlling voltage between a surface electrode 27 and a lower electrode 25 (between driving electrodes) of the electron source 2 and voltage between the anode electrode 3 and the electron source 2. The control device 5 makes the gas excited without making the gas discharge by controlling voltage between the driving electrodes of the electron source 2 so as to make peak energy of an energy distribution of the electrons larger than excitation energy of the gas and to make the peak energy of the energy distribution of the gas smaller than ionization energy of the gas. The phosphor layer 4 has a first phosphor for light-emitting by being excited with the excitation light, and a second phosphor for light-emitting by being excited with the electrons from the electron source 2.