The bad side of foot soaking is mainly due to the water temperature is not suitable or the selection of the crowd is not suitable. 1, for the water temperature is not the higher the better, especially for the elderly and lower limb neurological disorders, this kind of crowd for the temperature and can not be a good judgment, soaking the feet is very easy to appear water temperature is too high and caused by scalded. 2, not all of the crowd is suitable for soaking the feet, such as diabetic lower limb gangrene diabetic foot patients, as well as Lower extremity atherosclerosis embolism patients, both of the lower extremity blood reflux is not smooth, and foot soaking due to the role of water temperature, can promote the lower extremity blood reflux, local obstruction is more serious, will lead to subcutaneous hemorrhage or even localized hyperpigmentation in the long term. The above two situations can be avoided foot soaking bad, only the right crowd to choose the right water temperature, in order to give full play to the role of foot soaking.