The invention relates to the technical field of road lighting equipment and discloses a high-pole solar street lamp device. The device comprises a base. The top of the base is fixedly connected with alamp pole. Supporting rods are fixedly connected to the tops of the surfaces of the left side and the right side of the lamp post. A street lamp body is fixedly arranged at the ends, away from the lamp post, of the supporting rods. A fixing plate is fixedly connected to the top end of the lamp post. Sliding groove plates are fixedly connected to the left side and the right side of the fixing plate. Sliding plates are clamped in the sliding groove plates. According to the invention, a handle drives a fixed rod to pull outwards. A fixing rod is pulled outwards to drive the clamping plates to move outwards together. A sliding block slides in a connecting block and a connecting rod is driven to sleeve a rotating shaft on the surface of the connecting plate by moving the sliding block. In thisway, the handle is loosened. A clamping plate is clamped between every two adjacent clamping blocks under the elastic action of reset springs. Therefore, a solar cell panel is arranged and fixed. Meanwhile, the solar cell panel is convenient to replace.