In the primary loop of PWR, corrosion products flow into the reactor core along with the coolant in the form of particles or ions, and become radioactive after activation. Particle-like corrosion products are deposited on the surfaces of both the fuel cladding and the pipes of the primary reactor system, forming a strong radiation field, which is harmful to maintenance workers. Therefore, investigation of the migration behavior of particle-like corrosion products is of great importance to the radiation protection and safe operation of NPPs. The particle-like corrosion products will be deposited in the primary loop of PWR and in this paper, the DPM model with Erosion/Accretion module is used to simulate the flow and deposition of particle-like corrosion products. The deposition and erosion of Co-58 and Co-60 in the hot leg, cold leg and crossover leg are studied. The calculation results show that particle-like corrosion products with smaller size have better mobility in flow field and lower erosion and smaller deposition rate than the bigger one. The maximum deposition was found near the elbows of pipes and mainly affected by the number of particles collision with the inner-surface of the pipe. The flow is affected by centrifugal force due to the structural shape of the elbow.