Multi-component dispersed poly(methyl methacrylate-co-methacrylic acid) photopolymer was prepared and its holographic characteristics are investigated e xperimentally.The sample is composed of SiO_{2nanoparticles},ZnMA organometallic componen ts,PQ photosensitizer and P(MMA-co-MAA) matrix.The strategy to inhibit the shrinkage of photopolyme r is used to separate the photopolymerizatoin during exposure from thermal polymerization of host matr ix.The ultrasonic oscillation method is used to uniformly mix several components in the sample.The neglectable shrinkage and excellent optical properties are attri buted to the special preparation method.The SiO₂/ZnMA/PQ/P(MMA-co-MAA) sample with thickness of 1mm was prep ared in the experiment.Typical PQ/PMMA sample with the same thickness was prepared for compa rative experiments.The holographic scattering losses of samples were measured and holog raphic storage stability is described quantitatively.After a period of 3300s,the uniformity of diffration efficiency in multiplexing is evidently improved.The experimental results indic ate that the increase of scattering loss can be neglected.Moreover,th e improvement of stability is achieved by the P(MMA-co-MAA) matrix.The decay time constant of grating in mul ti-component doped sample is 6.4×10^4s.This value is much bigger than 2×10^4s in typica l PQ/PMMA material.The multi-component dispersed polymer maybe provide a significant foundation to ob tain holographic materials with high stability and capability.