The invention belongs to the technical field of chemical engineering, and particularly relates to a method for detecting the organic treatment stability of the surface of titanium dioxide. The method comprises the following steps that a, a titanium dioxide triple-washing material and gas powder are dried to reach the constant weight; b, an infrared spectrometer is used for detection; c, differential spectra of infrared spectra of the gas powder of each batch and the triple-washing material are compared; d, an organic treatment agent is dried to reach the constant weight, and an energy disperse spectroscopy is used for qualitatively detecting all elements; e, an element analyzer is used for qualitatively detecting all the elements of the triple-washing material and the gas powder material of each batch; f, if the differences between the gas powder materials of the batches and the content of a certain element of the triple-washing material are different, the added amount of the organic treatment agent is not stable; if the differences are the same, the added amount of the elements is stable. The method has the guiding significance of feedback regulation of improving the organic treatment agent addition technology.