Different from the commonly liquid phase in-situ polymerization method, the modified stepwise liquid phase in-situ polymerization method is used to make polyaniline grow uniformly on the carbon fiber paper substrate. The effects of the ratio of carbon fiber to aramid pulp, the amount of initiator and aniline, and the dipping time and reaction time on the conductive properties of polyaniline-carbon fiber conductive paper were investigated. Scanning electron microscope (SEM) was used to observe the microscopic morphology of conductive paper, and Fourier transform infrared spectroscopy (FT-IR) and electron microscopy energy spectrum analysis (EDS) were used to characterize their surface structure and element changes. The results show that when the ratio of carbon fiber to aramid pulp is 2:8; the amount of initiator is 0.375 mol/l; the molar ratio of aniline to hydrochloric acid is 2:1; the reaction time is 12 h and the dipping time is 1 min. relative to the carbon fiber base paper (CP), the volume resistivity of the conductive paper (PANI-CP) prepared by the stepwise liquid phase in-situ polymerization method is 0.184 Ω?cm, the conductivity is improved by 71.4%, and the tensile index is 22.993 N? m/g, physical strength increased by 14.1%; and relative to conductive paper (L-PANI-CP) prepared by liquid phase in-situ polymerization method, the electrical conductivity increased by 46.2%, and the total color difference DE decreased by 66.0%