Imperial edict is a precious information for the study of social politics, economy and culture at the corresponding time. The handwriting in the imperial edict has faded down in the process of long-term storage, which leads to the losing of its valuable information. In this paper, the cause of fading of handwriting on the imperial edict was firstly analyzed, then, the handwriting reappeared under the action of a dispersion agent of nano-silicon dioxide/n-butyl alcohol. The influence of reappearance reagent on the simulate sample was investigated using infrared spectrum, scanning electron microscopy and video contact angle. In addition, the effect of reappearance reagent on the ageing resistance was evaluated by color difference and mechanical performance of simulate sample. The results showed that the reappearance reagent not only visualized the vague handwriting without significantly changing the morphology and structure of the imperial edict, but also improved the mechanical properties and ageing-resistant performances of imperial edict, which is of great significance to saving the imperial edict for a long time. The method has a certain reference to the visualizing of the fade handwriting on similar cultural relic.