The islands are often far from the land, many of which are in remote areas. Laying the grid is a difficult problem to solve, so nowadays many islands are not connected to electricity, and lighting is an issue that residents of the island urgently need to solve. Solar street lights can solve the lighting problem because they do not need to be connected to the power grid. At the same time, some additional functions of the solar street lights, such as USB port charging, can provide some other aspects of life convenience for island residents to solve remote area lighting problems.