Impact of pseudogap on photoinduced superconducting phase transition in underdoped Bi2212

•QP dynamics of UD-Bi2212 in the photoinduced phase transition was investigated by pump-probe spectroscopy.•The pump fluence dependence of the QP dynamics shows a delay of the SC recovery.•The observed delay time is comparable to a recovery time of PG, suggesting a role of PG responsible for the SC formation. We report nonequilibrium quasiparticle (QP) dynamics in underdoped Bi2212 crystals using ultrafast optical spectroscopy, which allows to analyze the dynamics associated with the superconducting (SC) and psuedogap (PG) QPs independently. In the saturation condition of the SC component, where the SC condensate is fully destroyed within the photoexcited volume, we found a delay of the SC state recovery associated with a transient normal state. The delay increases linearly with increasing the pump fluence. The QP dynamics also shows a contribution of the PG component, whose magnitude at the start of the SC state recovery was almost constant at various pump fluences, suggesting a critical level of PG order before the SC condensate can recover.