The invention discloses a ceramic tile cutting device for a construction site. The device comprises a workbench, a storage assembly, a feeding assembly and a cutting assembly, wherein the feeding assembly is located between the cutting assembly and the storage assembly, and the storage assembly and the feeding assembly are all located on the top of the workbench; the storage assembly comprises a U-shaped bearing plate and a pushing assembly, the U-shaped bearing plate is located above the workbench, and a baffle is arranged at the end, away from the cutting assembly, of the U-shaped bearing plate; the cutting assembly comprises a cutting component and a clamping component, the cutting component is used for cutting a workpiece, the clamping component is used for clamping the workpiece, andthe cutting component is located beside the clamping component. The cutting device has the advantages that the storage assembly and the feeding assembly can conduct feeding automatically on ceramic tiles, and the labor intensity of workers is reduced; the clamping component is used for automatically clamping the ceramic tiles, the ceramic tiles do not need to be manually clamped, and therefore industrial injury accidents caused by manual clamping of the ceramic tiles are avoided.