In this report, we demonstrate a noise reduction recording in a photorefractive memory with a dynamic refreshing technique by mutually pumped phase conjugate mirrors (MPPCMs). The dynamic refreshing, that means the continuous rewriting of an original hologram with the optical feedback in synchronism with the readout, largely contributes to the maintenance of the recorded hologram by all-optical process. Long-term continuous readout without any fixing technique can be achieved by the high quality image refreshing that uses the resonance of the phase conjugate beams with image information between phase conjugate mirrors. Our technique additionally offers the noise reduction of an input image in the recording process without any external image processing systems. The noise reduction can be achieved by the characteristics of the MPPCM that the incident intensity ratio required for the MPPCM generation is determined by the coupling strength of the crystal. In this report, we show the noise reduction for an image data and the long-term readout can be realized by adjusting the appropriate incident beam intensities and the coupling strength of crystals. We perform recording and retrieving experiment on the photorefractive holographic memory with barium titanate crystals and demonstrate the noise-reduced image is reconstructed over 10 minutes in the double MPPCM configuration we propose whereas reconstructed image fades away within 2 minutes in the single MPPCM configuration.