[Objective]The research aimed to study the effect of the acetone extractives of silver chain wood during inducing discoloration under the pretreatment conditions.[Method]The qualitative analysis to the acetone extractives of silver chain wood before and after discoloring was carried on showing the main components of the acetone extractives and then taking comparison.[Result]Under the pretreatment conditions,the content of acetone extractives transformed.The hydroxyl and carboxyl,belonging to auxochromic gro...