勘合，是由明初控制中央衙门政令、辨识公文真伪的“行移勘合”制度所派生。至清朝，沿用为证实所差遣官员身份，及动用驿站马匹的凭证性公文文种。现以清代档案中《户部勘合》一则为例，加以剖析。（说明：原件为版印件，竖写。现改为横排；并分段、标点。）一、清代《户部勘 Exploration and reconciliation are derived from the “shift and reconnaissance” system that controls the central Yamen decree in the early Ming Dynasty and identifies the authenticity of official documents. To the Qing Dynasty, in order to confirm the identity of the officials dispatched, and the use of postcards horses documented documents. Now in the Qing dynasty archives, “the Ministry of exploration unit” as an example, to be analyzed. (Note: The original is a printed version, vertical writing now changed to horizontal; and sub-paragraph, punctuation.) First, the Qing Dynasty "Habitat survey