The TG-DTG curves and TG-DTA curves of wheat stalk and its binder were investigated by the thermogravimetry.The results indicated that when the wheat stalk were made wheat stalk binder,cellulose,hemicellulose and xylogen were basis.And some of hemicellulose were hydrolyzed,so as to the content of fixed carbon comparatively increased,and its burning speed also increased.In addition,the calorific capacity of briquette were influenced when the additive were entered.