The present invention relates to a solar cell module, includes a plurality of solar cells, a concentration unit having a flat surface to which solar light is incident, arranged at a position spaced apart from the solar cells, and configured to concentrate the incident solar light for output, and a reflection unit configured to reflect light between the solar cells, wherein the concentration unit is provided with a reflective region such that solar light concentrated by the concentration unit and output from is trapped between the concentration unit and the reflection unit, and an air gap is formed between the concentration unit and the reflection unit.