Splicing insertion combined building block

The utility model relates to a splicing insertion combined building block which comprises a rectangular structure block, a half cylindrical structure block and a cylindrical structure block, wherein, the end faces of the structure blocks are all provided with splicing insertion holes which are provided with elastic connecting pin that can be inserted into the splicing insertion holes. The three structure blocks of different shapes use the connecting pins to insert into each other so as to have infinite change, and thus users can arbitrarily joint and assemble the moulds of various types of buildings, air crafts, automobiles, shipes, various animials, plants, etc. by imagination. The splicing insertion combined building block ensures that children get limitless interest from playing, and is good for cultivating the imaginative power and the creativity of children. The splicing insertion combined building block as a novel intelligent toy has the advantages of simple structure, infinite change, convenient splicing and assembly, and strong interest.