Provided is a once-sintering method of self-generated glaze ceramic.The method is characterized in that after a clay body is put into a furnace hearth of a ceramic kiln, the clay body is subjected to continuous heating treatment till the clay body is once-sintered into a self-generated glaze ceramic product, and the product is taken out of the kiln, wherein a specific temperature system is executed in the heating treatment process.By means of the method, the ceramic quality can be guaranteed, the method can be also beneficial for improving the production efficiency and beneficial for energy saving and environmental friendliness, and specially beneficial for reducing the carbon emission, and the method makes leap-type progress in ceramic production.