In the rise of the national environmental protection will of many advanced countries are restricting the use of mandatory recycling of traditional plastic, to reduce the impact of solid waste on the environment, another emerging material ”biodegradable plastic” was born. Biodegradable plastics under appropriate conditions to complete decomposition cycle, by incineration, burying the way the environmental impact is also lower than the traditional plastic product, so the use of corn starch and other raw materials, manufacture of plastic are assessed to be a pointer to solve environmental problems.