Abstract: A solid adsorption materials, Phyllanthus emblica immobilized-tannin(PEIT), was prepared based on glutaral as crosslinking agent and chitosan as polymer matrix. The structure and thermal properties of PEIT were characterized by using FT-IR, DSC and TG. The results showed that P. emblica tannins were immobilized on chitosan by glutaral crosslinking. The optimum conditions for preparing PEIT were found as follows:the mass ratio of glutaral to tannin 1:4, the mass ratio of chitosan to tannin 1.5:1, the initial pH value of the reaction solution 4.0, and 55℃ for 3.0 h. The result of using PEIT to adsorb metal ions showed that PEIT has good adsorption effection on Ge (Ⅳ), Ga (Ⅲ), In (Ⅲ). The PEIT demonstrated the maximum adsorption efficiency at pH 4.0 for In (Ⅲ) and pH 3.0 for Ge (Ⅳ) and Ga (Ⅲ). The adsorption for these three metal ions followed pseudo second-order kinetics, indicating the chemisorption nature. The adsorption process of PEIT to Ge(Ⅳ), Ga (Ⅲ), In (Ⅲ) was not sensitive to temperature, and the best adsorption temperature was 30℃. The adsorption isotherms all fitted well with the Langmuir model, PEIT was based on a monolayer adsorption onto homogenous surfaces by uniformly distributed adsorption sites, and the calculated maximum adsorption capacities were 67.65, 70.00 and 54.10 mg/g for Ga(Ⅲ), In(Ⅲ), Ge(Ⅳ), respectively.