The invention discloses a sea surface garbage cleaning device and a cleaning method for marine environmental protection, belonging to the technical field of marine environmental protection equipment. A sea surface garbage cleaning device for marine environmental protection, comprising a main body, a working cavity, a collection bin and a power channel are arranged in the main body, a collection plate is rotatably arranged in the middle of the main body, a turning plate is arranged on one side of the collection plate, The other side is provided with a diversion part, the main body is provided with a transport part, and the transport part is matched with the collection bin; a first rotating shaft is rotated in the power channel, a helical sheet is arranged on the first rotating shaft, and one end of the first rotating shaft extends to In the working chamber, a driving shaft is rotatably arranged in the working chamber, and the driving shaft is rotatably matched with the first rotating shaft; in the process of collecting garbage, the present invention does not require the operation of the staff, saves time and effort, and ensures the safety of the staff , and can be equipped with a remote control system for remote operation to improve the salvage efficiency of ocean garbage.