The influence of spontaneous emission factor on the nonlinear behaviors of vertical-cavity surface-emitting lasers(VCSELs) with multiple external optical feedbacks was studied by establishing a visual VCSELs model through SIMULINK.Results indicate that VCSELs undergo the regions of chaos,multiple,double and single period orderly(contrarily) with increasing the external cavity length(external mirror reflectivity).It is also shown that a large spontaneous emission factor can suppress the nonlinear behaviors of VCSELs introduced by the optical feedback and improve the device stabilities.