The numerical simulation was used to study the vertical scour way of fluid in the heat pipe exchanger by using CFD software FLUENT, and the flow field parameters such as pressure drop, temperature were analyzed. The results show that fluid pressure drop in the vertical scour way was less than fluid pressure drop in the lateral scour way under the same situation. But the heat transfer effect was poorer. The fluid pressure drop was affected by tube spacing and length in the vertical scour way, and fluid pressure drop was proportional to the tube length. The vertical scour fluid heat transfer effect could be improved effectively when the longitudinal fins were added to the heat pipe, which made the temperature distribution in the flow field be more uniform.