Role of charge fluctuation in Q1D organic superconductor (TMTSF)2ClO4

► We have theoretically investigated the spin and charge fluctuations in the quasi-one dimensional organic superconductor (TMTSF)2ClO4, and found novel order parameters of superconductivity. ► The order parameter with line nodes appears in the case of the strong charge fluctuation, while the order parameter with anisotropic gap suggested by Shimahara is reproduced in the spin fluctuation. ► The former is consistent with recent Yonezawa's experimental results on NMR and thermodynamic observation.