To provide an illuminating unit and an illuminating structure of a charging connector, capable of sufficiently securing visibility, and capable of effectively illuminating.

This illuminating unit 8 includes a light transmissive housing 20 and a light non-transmissive cover 21 in a constitution. In addition, the illuminating unit 8 is formed by arranging a first illuminating part and lock projection part 30 in a housing body part 28, is formed by arranging a second illuminating part 42 in a housing fixing part 33, and is formed by arranging a light passing window and lock hole part 48 on the light non-transmissive cover 21. The illuminating structure of the charging connector 1 is formed by arranging the illuminating unit 8 on the periphery of a power receiving side connector 3. The illuminating unit 8 spottedly illuminates the power receiving side connector 3, and indirectly illuminates the periphery of the power receiving side connector 3.