Giant hydraulic retaining wall assembly block

The invention discloses a giant hydraulic retaining wall assembly block. The assembly block comprises a wall body I, a wall body II and a wall body III; the wall body I, the wall body II and the wall body III are sequentially stacked from bottom to top; the wall body I is formed by sequentially and transversely arranging a plurality of brick bodies I; the wall body III is formed by sequentially and transversely arranging a plurality of brick bodies III; the wall body II comprises at least one single-layer wall body, and when the number of the single-layer wall bodies is two or more, the single-layer wall bodies are stacked up and down in a staggered mode; each single-layer wall body is formed by sequentially and transversely arranging a plurality of brick bodies II; the plurality of brick bodies II in each single-layer wall body in contact with the upper part of the wall body I are stacked on the plurality of brick bodies I in a staggered manner, and the plurality of brick bodies III are stacked on the plural