Sore and weak legs after moxibustion may be due to halo moxibustion, too long moxibustion time and other reasons. Patients who perform moxibustion on an empty stomach, overfilled, intoxicated, poor sleep, overfatigued, emotionally agitated, and overly tense, are prone to moxibustion fainting, which leads to a decrease in the efficacy of moxibustion. At the same time can appear, such as panic, shortness of breath, sweating, fatigue, fainting and other adverse reactions. Moxibustion can warm the yang, dissipate cold, remove dampness, moxibustion treatment process patients usually sweat more. If the patient has a deficiency of yin or if the moxibustion time is too long, some patients may sweat profusely and become dehydrated, resulting in limb soreness and weakness. If the legs after moxibustion is sore and weak, it is recommended to go to the regular hospital for diagnosis and treatment; if you need to carry out moxibustion, it is recommended to find a professional doctor to operate.