Titanium composite wallboard and splicing method thereof

The embodiment of the invention provides a titanium composite wallboard and a splicing method thereof, and relates to the field of composite boards. The titanium composite wallboard comprises a bottom plate layer, a fireproof core plate layer and a titanium composite panel layer which are sequentially arranged, a hollow cavity with at least one end communicating with the outside is formed in the fireproof core plate layer, and a conical thorn piece is arranged at the end, communicating with the outside, of the hollow cavity; at least one end of the titanium composite wallboard is provided with a connecting piece and a connecting groove, and the connecting piece comprises a heat insulation part and an inserting part which are integrally connected; a high-pressure water box is arranged between the heat insulation parts between the adjacent titanium composite wallboards, an extrusion part is arranged on the inner wall of each heat insulation part, and a first gap is formed between each extrusion part and the cor