1, promoting blood circulation and removing blood stasis: through heat and drugs, the speed of blood circulation is accelerated, so that the body can get smooth up and down in a very short time, activate blood, improve microcirculation and promote metabolism.

2, cold and dampness: cold and dampness are the source of all diseases, through soaking feet, the cold and dampness in the body is discharged from the body.

3, dredge meridians: through heat and medicine, speed up blood circulation, take medicine with your feet, directly reach the body lesions, and get through the whole body meridians.

4, reconcile qi and blood: through heat and medicine, people with deficiency of both qi and blood and qi and blood disorders can play the role of harmonizing qi and blood, benefiting qi and tonifying kidney.