We make a comparison between the spherical resonant cavity and Fabry-Pero-cavity.The Raman oscillation within the spherical cavity which includes the oscillation spectra of water and ethanol droplets and the field distribution inside the droplets are discussed in detail. Both the output resonance and input resonance were observed in the experiment and are discussed. The high-order Stokes oscillation and the combination Stokes oscillation in the liquid droplets were also observed.