To solve the problem that is a large number of corn stalks are burned or disorderly piled,both environmental pollution and waste of resources,on the basis of method of determination cellulose,hemicellulose and lignin,we have innovative out a more accurate and simple method.In corn stalk,the mass fraction of cellulose,hemicellulose and lignin content is 32%,27.82% and 15.42%,So that we could make full use of corn stalks.