The invention discloses a building block robot cube sliding block mould assembly. The building block robot cube sliding block mould assembly comprises a first sliding block, a second sliding block, a first front mould insert and a second front mould insert, wherein the first sliding block and the second sliding block face each other; a building block robot cube processed by the building block robot cube sliding block mould assembly is arranged between the first sliding block and the second sliding block; inverted buckles are arranged on the sides, facing towards the first sliding block and the second sliding block, of the building block robot cube correspondingly; furthermore, a first inverted buckle structure, which cooperates with the inverted buckle on the side, facing towards the first sliding block, of the building block robot cube is arranged at the bottom of the side, facing towards the building block robot cube, of the first front mould insert, and a second inverted buckle structure, which cooperates with the inverted buckle on the side, facing towards the second sliding block, of the building block robot cube is arranged at the bottom of the side, facing towards the building block robot cube, of the second front mould insert.