Cl-35 NQR frequencies and spin-lattice relaxation time, and H-1 NMR spin-lattice relaxation time were measured on (chloranilic acid)-(1,2-diazine) 1:2 molecular complex to detect H-transfer motions in the H-bonded three molecular system. Only a single H-jump mode was observed by H-1 NMR, whereas three kinds of H-transfer modes were obtained in Cl-35 NQR in good agreement with the prediction.