Abstract: The present invention relates to toy blocks for children including: a plurality of block bodies 10 molded from a synthetic resin material; edge connection parts 11 extended from each block body 10 in such a manner as to be molded unitarily to each block body 10, each edge connection part 11 having a size corresponding to each edge connection part 11 of another block body 10; and coupling means 20 adapted to maintain the edge connection parts 11 of the two block bodies 10 in the state of being connected to each other on the same line as each other.