The invention relates to a zirconium dioxide full porcelain tooth which comprises a false tooth fixing bridge structure and a glaze porcelain layer which covers the outer surface of the false tooth fixing bridge structure, wherein the false tooth fixing bridge structure is made of a zirconium dioxide material and comprises a plurality of inner false tooth crowns which are mutually bonded and supporting bodies which can be sleeved and bonded onto a tooth. The interiors of the supporting bodies are hollow and are respectively connected to both sides of each inner false tooth crown, and the glaze porcelain layer is made of a porcelain material. The invention also provides a manufacturing method of the zirconium dioxide full porcelain tooth. The method comprises the following steps of collecting data, cutting and grinding the false tooth fixing bridge structure, firing and coating porcelain for decoration. The zirconium dioxide full porcelain tooth has no off-smell and no toxicity to human bodies, cannot change the color of the gingival, has high strength and is suitable for manufacturing false teeth with large-span fixing bridge structures.