Abstract: The development of modified plastics industry during the eleventh five-year plan period was introduced.Modified plastics industry has developed into a uprising industry including about 1000 enterprises being engaged in modified plastics；200 related enterprises being engaged in auxiliaries，additives，compounding machinery and processing equipment；and more than one hundred thousand people in employment. Some new type modified plastics including ACS，PA/ABS alloy，high barrier nano-composite poly（ethylene terephthalate）（PET） for bottles and films，new anti-static filler， new talc masterbatch，environmentally friendly modified plastics，carbon fiber reinforced plastics，and other new types of modified plastics products were developed. Finally，the trends and the main tasks of modified plastics during the twelfth five-year plan period were introduced.