Green printing is a printing mathod that adopts environmental friendly materials and processes,produces less pollution in the printing process,saves resources and energy,and is easy to be recycled after the printing is discarded,which is naturally degradable and has little impact on the ecological environment.Green printing requires cocrdination with the environment,including the use of environmentally friendly printing materials,clean printing production process,the safety of printed matter to users,and the recycling and recycling of printed matter.that is,the whole life cycle of printed matter from the selection of raw materails,production,use,recycling and so on should meet the requirements of environmental protection.