The invention relates to a visual-based unmanned aerial vehicle accurate landing method, a storage medium, a device and a system, multistage station identification is adopted and an identification redundant array is adopted in the last stage, so that the unmanned aerial vehicle can land in stages, different landing altitude requirements can be adapted, the flexibility in configuration is increased, the adaptive ability to landing requirements is enhanced, the influence of shadow and motion errors is overcome, so that the landing process is basically free from the interference of the shadow ofthe unmanned aerial vehicle, and the robustness of identification is improved, the abnormality can be automatically identified in the landing process, and a corresponding processing method is provided, thereby, the compatibility of abnormal conditions is enhanced, the influence of visual field change, motion deviation and the like, is effectively overcome, and the landing stability is improved. Ananisotropic parking position mark is adopted, angle information is provided, and the unmanned aerial vehicle is allowed to land at a target position according to a specified angle; and a projection lamp is arranged on a landing platform to irradiate the target position of the landing platform, light is supplemented in time when light is dark, and all-weather accurate landing of the unmanned aerial vehicle is achieved.