It is possible to apply hot compresses to mastitis, but it is also important to pay attention to several other issues: 1. Make sure that the nipple is in a relatively intact state, with no breakage, bleeding or fluid flow. If there is any breakage, bleeding or fluid flow, be sure to disinfect it strictly and try to keep it dry and clean. 2. Try to be able to drain the milk. If the child is able to suckle, try to let the child suckle the milk. If not, use a breast pump to pat the milk. If it still doesn’t work, discharge the milk with the help of manipulation. 3. One tip is to put on potato slices, however, it needs to be done only when the milk has been drained and there is no special sense of fluctuation, redness, swelling, heat or pain.