Abstract: As a sensitive superficial inspection method, X-ray photoelectronic spectroscopy(XPS) is very useful for chemical structure detection, It can offer very useful information for the bonding mechanism of complex material. The XPS of each elements in the complex inorganic ion exchanger titanium phosphate ammonium molybdophosphate(TiP-AMP) was studied. The complex mechanism of the substance was discovered through studying binding energy shift of each elements.