Cotton stalk vinegar and miscellaneous wood vinegar had been analyzed comparatively.Their wood vinegar composition was detected by GC/MS mainly.The major components of the two wood vinegar were acids,ketenes,phenols,alcohols,and other organic materials.There were 30 and 41 kinds of components respectively in cotton stalk vinegar and miscellaneous wood vinegar,but other organic materials were less than in miscellaneous wood vinegar.Physical and chemical indicators showed that the color of cotton stalk vinega...