Abstract: Lightweight self-waterproof concrete (LSWC) was made by double expansion resource expansive agent and lightweight aggregate (LA) of different density degree and type. Workability, physical mechanics, and deformation of LSWC were investigated. The results show that workability of LSWC is closely related to water absorption, shape, gradation, and density of LA. Compressive strength of LSWC depends on cylinder compressive strength of LA when with a fixed water to binder ratio. Water absorption of LA can result in prolonging of expansion rate. In the interrelationship between expansive agent and LA, restrained expansion rate of LSWC grows significantly, and drying shrinkage is obviously inhibited.