The invention discloses a solar street light pole advertisement flag which solves the technical problem that an existing street light pole advertisement flag is trouble to maintain due to the fact that the internal installation structure is complex. The solar street light pole advertisement flag comprises an advertisement flag body, a solar cell panel, a storage cell connected with the solar cell panel and a fixing support for fixing the advertisement flag body; the advertisement flag body comprises a frame, a partition plate is arranged in the frame, two installation grooves are formed by the two side faces of the partition plate and the frame in an enclosing mode respectively, a luminous plate, an advertisement plate and a plastic sheet which are sequentially stacked from inside to outside are arranged in each installation groove, and the luminous plates are electrically connected with the storage cell; the four frame strips on the front side and the back side of the frame are each rotatably connected with a hinge, the hinges rotatably abut against the outer side faces of the plastic sheets, the side faces, facing the partition plate, of the hinges are provided with first rib strips, second rib strips are arranged between the first rib strips and the hinges, and first grooves are formed between the first rib strips and the second rib strips.