The invention discloses a Sn-Ti/alumina three-dimensional particle electrode. The Sn-Ti/alumina three-dimensional particle electrode has the advantages of high pollutant removal rate and high catalysis activity. A production method of the electrode comprises the following steps: 1, placing an alumina particle electrode in a mixed solution, carrying out ultrasonic vibration, putting the vibrated alumina particle electrode in nitric acid, boiling nitric acid, washing the acid treated particle electrode with water until the particle electrode is neutral, and drying the washed particle electrode; 2, dissolving a tin salt in a hydrochloric acid and anhydrous ethanol mixed solution, adding a stabilizer, adding a titanium-based compound to the above obtained solution, and slowly adding ultrapure water in a dropwise manner to obtain a transparent stable sol; 3, putting the electrode obtained in step 1 in the sol solution prepared in step 2, carrying out vibrating impregnation, filtering out an impregnation solution, and drying the obtained electrode; 4, placing the electrode obtained in step 3 in a muffle furnace, and calcining the electrode to obtain a particle electrode; and 5, repeating the step 3 and step 4 to obtain the Sn-Ti/alumina three-dimensional particle electrode.