The　SiO2　microsphere　cavity　and　the　TiO2-SiO2　hybrid　microsphere　cavity　with　diameters　of　206　μm　are　prepared　with　the　electrode　spark　discharge　method　and　the　sol-gel　method.　The　Q　values　of　two　microsphere　cavities　at　1550　nm　are　2.15×107　and　1.36×106,　respectively.　The　broadband　resonant　transmission　spectra　show　that　compared　with　those　in　the　same　size　of　SiO2　microsphere　cavity,the　absorption　depth　ratios　of　the　resonant　peaks　of　the　high-order　whispering　gallery　modes　in　the　hybrid　microsphere　cavity　increase　obviously,　indicating　that　the　high-order　modes　are　effectively　excited.　Moreover,　the　average　red　shift　of　the　resonant　wavelengths　is　0.706　nm　and　the　corresponding　free　spectral　range　is　reduced　by　0.020　nm,　indicating　that　the　resonant　characteristics　of　the　SiO2　microsphere　cavity　can　be　effectively　tailored　by　the　TiO2　film.　The　average　red　shift　of　resonant　wavelength　and　the　average　reduction　of　free　spectral　range　of　the　microsphere　cavity　with　a　diameter　of　134　μm　are　1.012　nm　and　0.022　nm,　respectively,　indicating　that　small　size　microsphere　cavities　have　strong　resonance-tailoring　capability.　©　2019,　Chinese　Lasers　Press.　All　right　reserved.