Polyaniline (PANT)-intercalated graphite oxides (GOs) were synthesized and theirelectrochemical properties were investigated. Surfactant-intercalated GO dispersed in N-methyl-2-pyrrolidone (NMP) reacted with various amounts of PANI solution in NMP, giving intercalation compounds with I_c values of 1.1nm or 1.3nm. The absorption peak at 2900cm^-1 derived from C-H group in surfactant was not observedin the IR spectra of the obtained intercalation compounds. This indicated that surfactants intercalated into GO layer were completely replaced by PANI via ion exchange reaction. The charge-discharge curve of the intercalation compound with I_c value of 1.1nm was similar to that of GO at the first cycle and to that of PANI at the subsequent cycles. However, it was different from that of the physically mixed GO/PANI composites. The discharge capacity at the 10th cycle for the above intercalation compound was 80 mAh/g.