To provide a new device using a hydrogen storage material as a hydrogen supply source.

A hydrogen storing and discharging device 7 includes a vessel 21 forming an inner space 21a. The vessel 21 is formed by anode junction of a sealing base plate 23 on a plane base plate 22, a recess part is formed on a junction surface of the sealing based plate 23 and the plane base plate 22, and the recess part becomes the inner space 21a. Hydrogen storing membrane 24 is formed on the base plate 22 in the inner space 21a and diffusion prevention membrane 25 is formed on the hydrogen storing membrane 24, and hydrogen permselective membrane 26 is formed on the diffusion prevention membrane 25. A membrane heater 27 is formed on a reverse surface of the base plate 22. Hydrogen is discharged from the hydrogen storing membrane 24 when the membrane heater 27 generates heat, and hydrogen is stored in the hydrogen storing membrane 24 when the membrane heater 27 does not generates heat.