The commonly used C25 concrete was selected as the research object and the water absorption kinetic method was employed to investigate the absorption characteristics of concrete to the water-soluble infiltration capillary/crystalline waterproof (WCCW) material. Moreover, the influences of absorption saturation degree and curing period on water absorption rate and water absorption kinetic parameters were examined. The results reveal that absorption process of concrete to WCCW material conforms to the water absorption law, in which the absorption saturation degree increases rapidly during the initial 2.h, and it can reach 94% after immersion for 8.h. With the rising of absorption saturation degree and elapse of curing periods, the saturated water absorption rate decreases, while the water adsorption kinetics parameter α reduces and λ increases. Power law relationship exists between absorption saturation degree of WCCW material and water absorption kinetic parameters or the curing period. The economical absorption saturation degree after optimization is 60%. Concrete needs to be cured after absorbing WCCW material for 8.h. A more reasonable curing period is 7.d and shorter curing period is doubtful to the final quality.