To provide a light emitting element storage package which prevents light interference among a plurality of adjacent light emitting elements and has high heat dissipation property for improving light emission efficiency of total light emission of the plurality of light emitting elements and has high reliability.

The light emitting element storage package has a ceramic multilayer substrate 11 having a plurality of cavity portions 13 for enclosing and storing light emitting elements 12, and a reflector 15 which is joined to a top-surface outer circumferential portion of the ceramic multilayer substrate 11, encloses the plurality of cavity portions 13 and reflects light from the light emitting elements 12.