Abstract: Cementitious capillary crystalline waterproofing materials (CCCW) are a powdered material composed of Portland cement, quartz sand, and active chemicals. It has good adhesion with the concrete matrix, excellent mechanical properties, self-healing performance, and durability, and is considered a promising low-carbon building material. The active chemical components in this material can generate crystals through permeation and crystallization reactions, effectively repairing cracks in cement-based materials. Therefore, its application potential in infrastructure projects such as tunnels, bridges, and dams is enormous. This article first introduces the mechanism of action of CCCW; Secondly, the usage of CCCW was compared; Then, the impact of CCCW on concrete's durability, self-healing capabilities, and mechanical qualities was examined; finally, potential future study and application areas were explored.