NOVELTY - Zinc source, polyacrylic acid and distilled water are stirred to obtain mixed solution. Tin source, distilled water and distilled water are added to obtain tin source aqueous solution. The tin source aqueous solution is added to the mixed solution, alkali solution is added to white turbid liquid, magnetically stirred, obtained product is transferred to reactor, the reactor is placed in oven, naturally cooled to room temperature, centrifuged, obtained product is dried and heated, to obtain lithium-ion secondary battery cathode material as multilevel structure nano hollow spheres.    USE - Preparation of multilevel structure nano hollow spheres used as cathode material for lithium-ion secondary battery and solar energy battery, and catalyst.    ADVANTAGE - The method provides nano hollow spheres have high surface area and stable structure. The battery containing the nano hollow spheres has excellent electrochemical property and rate characteristics, and high discharge capacity and cycling stability.    DETAILED DESCRIPTION - 3.3-20 mmol/L Zinc source and 0.138-0.56 mmol/L polyacrylic acid are added, then distilled water is added and stirred for 20-30 minutes to obtain mixed solution. 2.5-20 mmol/L Tin source and distilled water are added in mass ratio of 1:(50-150), and distilled water is added to obtain tin source aqueous solution. The tin source aqueous solution is added into the mixed solution, and continuously stirred for 20-30 minutes to obtain white turbid liquid. The mass ratio of zinc source and tin source is 1:1. 0.6 mol/L Alkali solution is added to white turbid liquid, magnetically stirred for 20-30 minutes, obtained product is transferred to 60-10 ml reactor, the reactor is placed in oven, naturally cooled to room temperature, centrifuged under vacuum condition, obtained product is dried at 60-80 degrees C and heated at 160-200 degrees C for 6-24 hours, to obtain lithium-ion secondary battery cathode material as multilevel structure nano hollow spheres. The mass ratio of zinc source, polyacrylic acid and distilled water is 1:(0.1-0.6):(120-500). The weight average molecular weight of the polyacrylic acid is 3000-5000. The mass ratio of zinc source and alkali solution is (20-30):1.