Nanosized　hierarchical　pure　Si-Beta　zeolite　was　prepared　by　the　solvent-free　method.　With　the　assistance　of　1%　seeds　and　low　organic　template　content　(TEAOH/SiO2　=　0.06),　pure　Si-Beta　zeolite　is　well　crystallized　within　16　h,　neither　fluoride　mineralizing　agent　nor　mesoporogen　agent.　Here　we　comprehensively　investigated　the　physicochemical　properties　of　the　resulting　samples,　including　X-ray　diffraction,　scanning　electron　microscopy,　nitrogen　adsorption-desorption,　water　adsorption,　Fourier　transform　infrared　and　thermogravimetric　analyses　(TGA).　These　characterization　results　suggest　that　the　silicon　sources　would　influence　the　crystal　size,　but　all　samples　possessed　high　surface　area　(509-647　m(2)　g(-1)),　pore　volume　(0.40-0.71　cm(3)　g(-1)),　and　superior　hydrophobicity.