Acceptance cavity is an important part of the direct contact with the skin, when wearing upper limb prosthesis, the inner wall of the acceptance cavity will be soiled by sweat and dirt, the residual limb in the high temperature, humid environment, will produce eczema, ulcers. Skin in the receiving cavity for compression, friction, temperature changes, produce skin pigmentation, abrasion, infection, small blisters, bursa, allergic dermatitis, etc., to enhance the skin’s resistance to prevent skin diseases, wash the residual limb with soap and water before bedtime every day to keep the residual limb clean and dry. In addition, many amputees no longer wear the prosthesis because of the dirty receiving cavity. In order to avoid this situation, you can use a cloth with neutral detergent or water to wipe the inside of the receiving cavity every day to make it clean and dry. When using the inner liner of the receiving chamber, it should be kept as dry as possible, and the liner can also be wiped with neutral detergent, taking care not to deform the liner by excessive force. When using the leather receiving chamber, should pay attention to keep the receiving chamber wall clean, do not place in a wet place, should often use detergent to wipe. When using synthetic resin receiving cavity cracks, patients should not repair by themselves, from the receiving cavity fit and the impact on the residual limb and other considerations, should find a professional.