Phantom limb pain, also known as phantom limb pain, refers to the subjective feeling that the amputated limb is still present and accompanied by severe pain, which is mostly found at the distal end of the amputated limb, which is actually a hallucinatory phenomenon. However, the vast majority of them exist in combination with amputation pain. Phantom limb pain may be related to changes in various aspects of sensory afferents, such as peripheral receptors, sensory afferent fibers, spinal conduction pathways, thalamus, and even cortical changes, while phantom limb pain is also related to the patient’s psychological state. The preventive measures for phantom limb pain are as follows: 1. Do a good job of patient explanation and emotional guidance, and guide patients to face the fact that the limb has been amputated. 2, psychological induction and psychotherapy is an effective method to prevent phantom limb pain, sincerely retreat to interact with the patient. Give great help and care. Through interaction, suggestion, persuasion and induction, patients can learn to relax and shift their attention to eliminate the negative psychological factors and enhance their confidence to overcome the disease. 3, can gently tap the nerve stump, can also carry out a variety of physical therapy, such as heat, iontophoresis, waxing and sleep therapy, so that pain relief. 4, early assembly of prosthetic limbs, often wear pressure stimulation. Generally 1 to 3 months after wearing a regular prosthesis, phantom limb sensation, phantom limb pain can gradually disappear. 5, persistent phantom limb pain in addition to psychological care and other treatment, procaine local closure, sympathetic nerve block or excision is feasible. 6. Analgesic medication is not advocated for phantom limb pain, as it is easy to form dependence.