After the raw salt is heated, it is wrapped in a cloth bag. Apply it to the joints when they are cold. When the stomach is cold, apply it to the stomach. Dysmenorrhea can be applied to the lower abdomen and lumbago can be applied to the waist. Hot compress can dispel cold, dispel wind and relieve pain.

Cold pathogen invades the human body after catching a cold, and it hurts because of stagnant sweat and qi and blood stagnation. Hot compress with hot things can dispel cold evil and relieve pain. However, the crude salt hot compress package is not omnipotent, it only has the functions of hot compress and heating, and it is not as magical as claimed. Raw salt is chosen because it is clean, easy to heat and difficult to melt.

Matters needing attention in expanding information: dispelling cold and relieving pain is not because of salt, but because of heat. Whether it is heating in a microwave oven or pouring salt out for frying, it is the principle of heating. In the past, salt was expensive, so people chose "wax therapy" to apply heated wax to the affected area, and the effect was the same as that of crude salt hot compress package.

Crude salt hot compress bag is a good health care physical therapy tool, but it should be noted that patients with gout, infectious arthritis, stomach pain and joint swelling will feel more and more pain, which is not suitable for hot compress.