The sinking zooplankton fecal pellets had been considered as one of the important component of marine vertical carbon flux. The study on fecal pellets flux is also vital to understand the benthic pelagic coupling. In this paper, the morphology, production rate, decomposition and sinking rate of zooplankton fecal pellets were reviewed. Estimates from above factors showed that fecal pellets played an important role in carbon sedimentation. But the results of sediment traps indicate that fecal pellet carbon constitute only a small part of the POC in the trap. Studies on other sediment processes such as the microbiol food web are needed.