Using triethanolamine and thionyl chloride as raw materials,tri-(3-chloroethane)amine is synthesized by substitution reaction in the presence of solvent chloroform.Then tri-(p-benzenmethylethylether)amine has been synthesized by the substitution reaction with tri-(3-chloroethane)amine and 4-hydroxylbenzaldehyde.The reaction conditions are discussed.Under the best reaction condition,the yield of product reaches 78 %.