The large surgical trauma area and poor blood circulation after amputation, coupled with the need to use elastic bandage wrapping after surgery and poor skin permeability, can easily produce bacterial or fungal infection. Once the infection problem occurs, it will affect the functional training of the residual limb. Therefore, to maintain a more ideal state of the residual limb, to create conditions for the installation of prostheses. Specific practices are as follows: 1, the residual limb area should be cleaned daily before bedtime with a hand to tease the surface of the residual limb, dry with a dry towel. In the residual limb surface for gentle patting. 2, elastic bandage should be kept clean and dry, replaced at least once a day, such as sweating or other reasons should increase the number of replacements. 3.To eliminate residual limb edema, use elastic bandages and reasonable wrapping to promote stereotypy, or use advanced controlled environment therapy (CET). 4.To alleviate residual limb pain, medication, physical therapy, acupuncture, psychotherapy, and body therapy can be used. 5.The final requirement is to achieve the ideal residual limb, i.e. no thick swelling, no pain, no adhesion, no ulcer, no infection, no contracture deformity of the joint, and good function.