Hot compresses of fenghuang, cumin and large grain salt may have the effect of dispersing cold, relieving pain, warming menstruation and activating blood circulation. However, hot compresses of medicines need to be guided by a doctor. Fangfeng can dispel wind and relieve epidemics, win dampness and relieve pain (remove pain caused by excessive dampness), and stop spasm. It is used for colds and headaches, rheumatism and paralysis, rubella and itching, tetanus. Fennel can dissipate cold and relieve pain, regulate qi and stomach. It is used for cold hernia and abdominal pain (acute abdominal pain caused by cold internal organs and external wind-cold), testicular drop, dysmenorrhea, cold pain in the abdomen, distension and pain in the epigastric region, and vomiting and diarrhea with little food. Salt cumin warms the kidneys and disperses cold to relieve pain. It is used for abdominal pain of cold hernia, testicular deviation, menstrual cold and abdominal pain. Hot compresses can achieve the efficacy of dispersing cold and relieving pain, warming menstruation and activating blood circulation, and regulating qi and collaterals, and are often used for rheumatoid arthritis, dysmenorrhea, frozen shoulder, gastric discomfort, and so on. It is recommended to use under the guidance of a doctor, not self-medication, so as not to delay the condition.