A novel K3PO4-catalyzed synthesis of polysubstituted pyrroles by a Michael addition/alkyne carbocyclization of activated alkynes and N-propargylamines has been developed. This transition-metal-free cascade process represents an environmental friendly and efficient way to construct polysubstituted pyrroles in good yields. Catalyzed by CsF, a Michael addition/aza-Claisen rearrangement/cyclization sequential process has been achieved to selectively synthesize pyrroles in moderate yields.