Abstract: A luminous fan connection structure. The luminous fans are disposed adjacent to each other in a side-by-side manner. A blade is arranged in a frame base. A light guide ring combined with a light-emitting module is arranged annularly outside the blade. The frame base has a fan circuit board and a snap portion. The fan circuit board is electrically connected to the blade and the light-emitting module. The external connector includes a board seat and a connection circuit board. The board seat includes a pair of hooks. The connection circuit board includes a first and a second conductive pin. The board seat straddles between luminous fans. The pair of hooks are respectively fastened with the snap portions of the adjacent luminous fans, and the first conductive pin is electrically connected to one fan circuit board, and the second conductive pin is electrically connected to another fan circuit board.