Objective: Our previous study found that some of the male patients suffering from brachial plexus injury, especially BPRA, showed erectile dysfunction to varying degrees.The objective of this study was to establish a rat model of erectile dysfunction caused by BPRA.Method: Thirty SD rats were randomly divided into three groups.We established rat models of sham-operation group, simple BPRA group and that BPRA combined with spinal cord injury group.The surgery was performed through posterior approach.