The invention relates to a preparation technology for short aramid cut paper. The preparation technology comprises the steps that a certain amount of aramid yarn and distilled water are weighed, placed in a pulping machine and subjected to a first pulping process under certain experimental parameters; the aramid yarn obtained after the first pulping process is subjected to a rinsing process to obtain aramid yarn A, and the aramid yarn A, the distilled water and a dispersing agent A are mixed and added into the pulping machine and subjected to a second pulping process; the aramid yarn obtained after the second pulping process is subjected to the rinsing process to obtain aramid yarn B, a certain amount of the aramid yarn B and aramid fibrid are weighed, mixed and added into a beaker, a certain amount of the distilled water and a dispersing agent B are added into the beaker, and the mixture in the beaker is subjected to ultrasonic dispersion until the mixture is mixed evenly, and a mixed solution A is obtained; the mixed solution A is mixed with and added into a deflaker and subjected to defibering dispersion, and an even mixed solution B is obtained; after the mixed solution B is subjected to sheet-making, pressing and stabbing and drying process, a handsheet A is obtained; the obtained handsheet A is added into a roller press and subjected to a high temperature and high pressure treatment.