Abstract: This experimental research concentrates on the effects of fiber reinforced plastic(FRP) as a new material to implement structural reinforcement in improving the strength of eccentrically loaded columns. Two cases of large and small eccentricity are considered. Simply-loading test is conducted on the testing columns of each case,which includes the columns reinforced by 2, 3, 4, and 5 layers of FRP and the column without reinforcement.The analysis of testing results provides a testing and theoretical basis for actual usage of FRP reinfor cement.