Not all swellings are suitable for cold or hot compress, specific need to be combined with the actual situation of the patient: 1, if the local soft tissue injury caused by trauma, and except for the fracture. In this case, within 24 hours after the injury, local cold compresses can reduce edema and relieve pain; after 24 hours, local hot compresses can activate blood circulation and promote absorption of edema. 2, edema caused by heart disease, such as ankle and lower limb edema. This condition should be actively treated for the primary disease, simple cold compress or hot compress cannot relieve the symptoms, and the primary disease should be actively treated after clarifying the cause. 3, caused by kidney disease, edema of eyelids and face caused by metabolic abnormalities, perform renal ultrasound, kidney function and other examinations to clarify the diagnosis, to actively treat the primary disease, and simple cold compress or hot compress cannot relieve. 4, in addition, long-term oral hormone drug therapy leads to edema due to water and sodium retention in the body, and the symptoms can be improved by adjusting the treatment plan and giving diuretic treatment. Therefore, when swelling occurs, it is important to identify the cause. The treatment plan is different for different causes and needs to be combined with the actual situation of the patient.