The studies of nuclear cluster structure play an important role in understanding of nuclear structure properties.There are lots of works have been done[1?6] to study the nuclear cluster structure properties.. It is a very importantmethod to investigate the nuclear cluster structure through analyzing the breakup reaction of the interesting nucleus.The experimental study of the cluster structure of 9Li through analyzing its breakup fragments was performed atRadioactive Ions Beam Line in Lanzhou (RIBLL). The light charged particles were measured by a ΔE-E telescopearray. Also the energy distribution of the fragments have been measured in this experiment.