Abstract: The corrosion product deposits in the primary circuit of PWR has an important impact on the safe and stable operation of the reactor. So far, a large number of studies about corrosion product behaviors have been investigated. However, considering the inconsistency of experimental conditions and the complexity of the formation, migration and deposition mechanism of corrosion products, no definite conclusions have been drawn in many research directions. In this paper, the influence factors affecting the behavior of corrosion products,such as water chemistry condition, heat flux and coolant flow rate are summarized. Appropriate water chemistry conditions, such as pH around 7.4 and dissolved H concentration between 25-50 cm3/kg H2O, will reduce the generation of corrosion products. In addition, the effects of the heat flux and the coolant flow rate on the deposition of corrosion products cannot be ignored. In addition, several representative codes for predicting the behaviors of corrosion product deposits and some models for predicting the influence of corrosion product deposits on the operation of reactors are introduced. Several constructive suggestions for the further research about corrosion product deposits are put forward.