The utility model provides a grid bright wisp mounting structure and grid bright wisp and vehicle, the utility model discloses a grid bright wisp mounting structure is used for the cross -section to be the installation that U -shaped and opening are the grid bright wisp of expansion form, and link firmly set up in the inboard of grid bright wisp, grid bright wisp mounting structure including linkfirmly in installation main part on the inner wall of grid bright wisp, and link firmly in the installation is in the main part, and the orientation in the connection subject that the opening of gridbright wisp was arranged outward, just the installation main part have connect in the first link of grid bright wisp opening one end, and with keeping away from of grid bright wisp the continuous second link of flexing point of first link the last connecting portion that link to each other with the external component that are formed with of connection subject. Grid bright wisp mounting structure easy side demolding of loosing core when grid bright wisp injection moulding, can avoid grid bright wisp outward appearance face the inconsistent problem of shadow to appear, and have fine result of use.