Hierarchical structured SAPO-5 molecular sieve has been ionothermally synthesized by microwave irradiation and using eutectic mixture based on succinic acid/partly succinic acid with sebacic acid, choline chloride and tetraethyl ammonium bromide as solvent and template.The influences of various experimental parameters, such as crystallization time, the types of precursors and the kinds of eutectic mixture have been systematically investigated. The resulting SAPO-5 molecular sieve was characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), and N2 physical adsorption-desorption, respectively. SEM analysis revealed that aluminum and phosphorus sources had great impact on SAPO-5. N2 physisorption measurements confirmed that replacing partly succinic acid with sebacic acid has great impact on the pole structure of SAPO-5. SEM、N2 physical adsorption-desorption characterizations show that the resultant material is one kind of hierarchical structured aluminophosphate molecular sieve possesses both micropore and mesopore.