In order to prolong the life of the ancient murals, some modern polymeric materials were used as coherence reinforcement agents to infiltrate murals. Thirty years later, these materials have aged, lost efficacy and even started to cause problems. In order to extend the life of the ancient murals and to apply new reinforcement materials, it will be important to remove the aged reinforcement materials. However, removal of these materials has remained a scientific and technological problem. This study focuses on four common reinforced polymeric materials:polyvinyl acetate emulsion, modified siliconeacrylic emulsion, pure acrylic emulsion and Paraloid B72. The cleaning process were simulated in the laboratory.The most environmental friendly and efficient material an aqueous gel was selected for testing cleaning technology. Four gel materials were designed and prepared and 16 gel formulations were tested. Gels together with ethyl acetate, xylene, amyl alcohol, propylene carbonate were tested. The performance of gel, the compatibility of gel and detergent and damage to the murals were all evaluated. Besides the cleaning capability of these four reinforcement agents, the influence of reinforcement materials ageing were tested on clearance, etc., on porcelain plate, glass and simulated murals. Finally, it is suggested suitable method for removal of the 4 reinforcement agents, calculated the rate of their reversibility and analyzed the collected data.