Abstract: The objective of this experiment was to evaluate the fermentation kinetics of The Cornell Net Carbohydrate and Protein System(CNCPS)carbohydrate fractions(A, B1, B2 and NDS)of various corn stalks′ types, including two varieties of high oil corn(HOC 647 and HOC 298), two varieties of typical corn(CAU 80 and CAU 3138)and one specific fodder corn(FC). The results showed that carbohydrate fractions were significantly different(P<0.001)among various corn stalks′ types. Contents of carbohydrate fractions A,B1 and NDS of HOC were highest among three types′ corn stalks, and gas productions of the three carbohydrate fractions from various corn stalks′ followed a similar order of their fraction contents (P<0.000 1). Contents of carbohydrate fraction B2 of HOC were lowest among three types′ corn stalks. These results indicated that HOC had better the nutritional value, because content of soluble carbohydrate of HOC was higher than that of other two corn stalks.