Novel end-functional polystyrene having isopropoxydimethylsilyl (IFS) groups at the end part of the chain was prepared. IFS groups were introduced by the reaction between the living polystyryl anion and 4-isopropoxydimethyrsilyl-alpha-methylstyrene (1) in THF at 195 K. The resultant polymer was characterized by GPC, H-1-NMR, and TLC. It was confirmed that the polymer had several units of 1 at the chain end and a fairly narrow molecular weight distribution. IPS groups in the polymer can be hydrolyzed with strong acid such as mono-n-butylphosphate (MBP) but not with weak acid and base. Grafting behaviors of the polymer onto silica and alumina were studied in toluene in the presence of MBP as a catalyst. The polymer was grafted onto silica effectively. However, it cannot be grafted onto alumina because of predominant adsorption of MBP onto alumina having a basic surface.