To provide a shorter drain block capable of making up the lowering of a water collecting function and a drainage structure of a pavement making use thereof.

The drainage structure is constituted of a concrete-made shorter pipe body 17A having a shorter drain 16A connected to a drain of a longer drain block 2 by making the length in the drainage direction shorter than the longer drain block 2 to penetrate in the drainage direction inside thereof. The upper part of the shorter pipe body 17A from the upper surface 1a of the shorter pipe body 17A to the shorter drain 16A is constituted of a porous concrete layer 18 having the same thickness as that of a porous concrete layer of the pipe body of the longer drain block 2. A collecting way S connected to the shorter drain 16A from the upper surface 1a is formed in the shorter pipe body 17A.