The care of lymphedema after breast cancer involves all aspects of life. Specific matters are that the affected limbs should not be held heavy, strenuous, and should not be subjected to strenuous exercise or shaking hands. The affected limbs should be protected from mosquito bites, avoiding blood collection and blood pressure measurement. Affected limbs do not contact various detergents, if washing clothes, washing dishes need to wear gloves. At the same time, we should pay attention to skin hygiene, after bathing can rub oil skin care products, so that the skin to keep moist, to prevent bacteria invasion of skin cracks and broken places. Pay attention to the care of the fingers of the affected limbs, nails should not be cut too short, burrs should not be pulled. Do not wear too tight necklaces and elastic bracelets and other jewelry. The affected limbs should not be hot or cold compresses, avoid strong sunlight, pay attention to keep warm. It is not advisable to take a sauna, hot springs and so on. The affected limb should not do the same action for a long time or repeatedly, such as mopping the floor, cutting vegetables, writing. Often elevate the affected limb to reduce edema, and rest when the patient feels pain. If the edema has been, pay attention to the use of elastic sleeve or elastic bandage bandage, long time walking or traveling by plane, especially should pay attention to.