A light-emitting apparatus including a light-emitting device, a light-guiding structure and a light output structure is provided. The light-emitting device includes a light-emitting layer. The light-guiding structure is configured to guide light emitted from the light-emitting layer. The light-guiding structure is disposed beside the light-emitting device and a refractive index of the light-guiding structure is greater than or equal to an average refractive index of the light-emitting device. The light output structure is configured to receive the light guided by the light-guiding structure to output the light out of the light-emitting apparatus.