The invention provides a device for detecting a nerve conduction function. The device comprises an exciting electrode, a recording electrode and a processing device, wherein the exciting electrode is fixedly arranged on a carrier the recording electrode is fixedly arranged on a substrate the processing device is connected with the exciting electrode and the recording electrode in a communication way, and the carrier is connected to the substrate through a connecting piece. When the device is used for detecting the nerve conduction function, the carrier is fixedly arranged at one end of a to-be-detected nerve, and the substrate is fixedly arranged at the other end of the to-be-detected nerve. The device disclosed by the invention is easy to place, easy to process and use and conveniently used for detecting the nerve conduction function, and the device can be used for early diagnosing peripheral neuropathy of diabetes mellitus in clinic.
