The work aims to prepare calcium chloride modified silica gel hygroscopic materials of different concentrations by calcium chloride and alcohol solution impregnation method, so as to solve the problems of easy rupture of aqueous modified silica gel and low water absorption rate of ordinary silica gel. The appearance quality of hygroscopic materials prepared by calcium chloride aqueous solution and alcohol aqueous solution was compared. The isothermal adsorption curves were tested by gas adsorption method. The pore parameters and fractal dimensions of calcium chloride modified silica gel hygroscopic materials were obtained based on BET theory and FHH model, respectively. The static adsorption curve of vapor was obtained by the static adsorption method. The adsorption kinetics equation suitable for hygroscopic materials was established according to the quasi-first-order and quasi-second-order kinetic models. The calcium chloride modified silica gel hygroscopic materials prepared by calcium chloride and alcohol solution could effectively reduce the rupture. The specific surface area and pore volume of the materials decreased with the increase of CaCl2 content, but the pore size changed little. The moisture adsorption of materials increased with the increase of CaCl2 content. The quasi-second-order kinetic model was more suitable to simulate the adsorption kinetics of the materials due to the higher correlation coefficient. The calcium chloride modified silica gel hygroscopic materials prepared by 25wt.% CaCl2 alcohol solution have high hygroscopicity, low matrix rupture degree and excellent regeneration ability, thus having a good application prospect.