Coal quality characteristics were obtained from the study of coal quality of upper formation in Cixi exploration district.It was found that lithotype is belonged to bright coal and semibright coal,mainly black.Vitrinite of organic components in coal samples is most important,and inertinite takes second place,exinite little.The main components in inorganic components were clay minerals.Sulfur content of 2#,4#,6# raw coal range from 0.09% to 1.54%,0.98% to 3.80% 0.24% to 4.18%,and the average value were 0.36%,2.50%,2.44%,respectively.In this district,ash content in high yield varied from low-ash to high-ash.It can be concluded from the relationship between sulfur content,ash content,maceral and coal-forming environment that the sedimentary enviroment belong to peat bog formed in carbonate platform,barrer island-lagoon,tidal flat and peat bog in delta plain.