The invention discloses a hemispherical interlocking wave-dissipating anti-scouring armor block body, and particularly relates to the technical field of bank slope protection. The hemispherical interlocking wave-dissipating anti-scouring armor block body comprises cuboid blocks, two inwards-concave hemispherical lock grooves are formed in two adjacent sides of the tops of each cuboid block, and two hemispherical lock pins are fixedly arranged at the other two adjacent sides of the outer end of each cuboid block; and the inwards-concave hemispherical lock grooves are matched with the hemispherical lock pins in size, and sixteen wave absorbing leakage holes are formed in each cuboid block. According to the hemispherical interlocking wave-dissipating anti-scouring armor block body, through aninterlocking structure, an interlocking mechanism can be generated between the cuboid blocks, previous independent individuals are effectively connected, the integrity is high, and the stability of the cuboid blocks under the conditions of waves, surface confluence scouring and bank slope instability is improved; and meanwhile, the adopted hemispherical interlocking structure has high applicability, due to the fact that the hemispherical structure is easy to splice, construction is convenient, the requirement for the bank slope flatness degree is low, economy and efficiency are higher, and large-scale use is facilitated.