This is a local compress therapeutic method promoting the absorption of medicine with aid of physical thermotherapy. It is suited for lower back and trunk where fumigating and bathing medicine is inconveniently applied. The hot compress medicine has the action of warming meridians and dissipating cold, promoting blood circulation to remove stasis, activating qi to stop pain, dredging meridians and activating collaterals. Clinically it is commonly used for blockage symptoms caused by invasion of wind, cold and dampness, old trauma, as well as abdominal distending pain.
      
Compress medicine:
Steep well the prescribed herbs in white spirit or vinegar then pack the herbs into two cotton bags with the opening fastened. Put the bags into a pot, and heating the pot with steam for 10 to 20 minutes, then use the bag to press onto the diseased part. In order not to scald the skin, a towel may be used on the diseased part first. The two bags are used alternately for 30 to 60 minutes, twice or thrice daily.
      
Kanli Sands:
Heat the iron sands, then mix them up with medicinal liquid decocted by vinegar and water, thus the Kanli Sands is ready for use. In clinical application, put the Kanli Sands into a bowel, add some vinegar and mix up, then put the sands into cotton bags, several minutes later, it will produce heat spontaneously, then use the bag to press onto the diseased part until it gets cool.

Simple hot compress medicine:
Fry crude salt, or rice bran, or wheat bran or Wuzhuyu and then put them into cotton bags, and use the bag to press onto the diseased part. It is simple, convenient and effective. In recent years, clinically there are patented hot compress medicines like hot-packing bag.