A light source module includes a quantum dot cell, a light emitting element, and an adhesive layer. The quantum dot cell includes a first glass substrate, a second glass substrate, a quantum dot region, and a reflective sealant disposed between the first glass substrate and the second glass substrate and surrounding the quantum dot region. The light emitting element is disposed at a side of the first glass substrate opposite to the quantum dot region and emits a light with a specific wavelength range. The quantum dot material in the quantum dot region converts the light with the specific wavelength range into another wavelength range. The adhesive layer is disposed at an outer side of the light emitting element for attaching the light emitting element to a surface of the first glass substrate.