Ti-MWW　was　prepared　by　acid　treatment　and　calcination　on　a　lamellar　precursor　which　was　synthesized　under　dynamic　hydrothermal　crystallization　conditions　using　piperidine　as　a　template,　and　boric　acid　as　a　stucture-supporting　agent.　The　crystallization　time　is　shortened　by　adding　Ti-MWW　seeds　and　increasing　stirring　rate.　Ultraviolet-visible　spectra　show　that　the　precursor　contains　tetrahedral　and　octahedral　Ti　species.　Calcination　of　the　precursor　results　in　a　partial　condensation　of　the　octahedral　Ti　to　form　the　anatase　phase.　The　octahedral　Ti　species　belong　to　a　kind　of　extraframework　Ti,　which　can　be　removed　easily　by　the　acid　treatment　in　a　short　time.　The　calcined　Ti-MWW　contains　the　anatase　when　the　acid-treated　time　is　too　long.　The　characteristic　infrared　band　at　960　cm(-1)　is　not　observed　for　the　Ti-MWW　precursor,　but　it　appears　in　the　samples　treated　by　acid.　Epoxidation　of　allyl　alcohol　with　H2O2　on　Ti-MWW　was　studied.　Ti-MWW　with　Si/Ti　ratio　of　20　and　acid　treatment　for　12　similar　to　16　h　is　more　effective.　The　conversation　of　allyl　alcohol　is　88.7%,　and　the　selectivity　for　glycidol　is　99%　under　the　reaction　conditions　of　333　K　and　30　min,　but　the　catalytic　activity　of　Ti-MWW　decreases　when　the　acid-treated　time　is　too　long.