Abstract: Reasonable installation method for suction and discharge pipe of oil pump plays an important role in pump running. Improper designcould cause a series of problems such as pump deformation, vibration, noise, negative pressure cavitations and so on. For this purpose, researches are carried out on the installation method of oil pump suction and discharge pipe based on an engineering case and comprehensiveconsideration of pipe stress and hydraulic characteristics of the pump. The results show that the installation method of it must meet therequirements for pipe stress and pump suction. On this basis, it is proposed that the aboveground installation method should be selected whenthe pump station inlet pressure is higher, that is, the pipe stress analysis is taken as a selection principle, and the underground installationmethod should be selected when the pump station inlet pressure is lower, that is, the pump suction analysis is taken as selection principle.