The concept and scope of peripheral nerves and vegetative nerves are different, and each plays a different role. Peripheral nerves refer to all nerves outside the brain and spinal cord, and are categorized into somatic nerves and visceral nerves according to their distribution. Somatic nerves are distributed to the body surface, bones, joints and skeletal muscles; visceral nerves are distributed to internal organs, cardiovascular vessels, smooth muscles and glands. The vegetative nervous system is part of the peripheral nerves, which are efferent nerves in the visceral nerve fibers. The peripheral nerves are responsible for sensory afferents and motor signals from the body and viscera, and for coordinating various activities of the body and viscera. The vegetative nervous system, on the other hand, is mainly responsible for life-threatening physiological functions, such as heartbeat, respiration, digestion, blood pressure, metabolism, etc. It is a control system that regulates bodily functions to a large extent unconsciously.