Clinically, moxibustion acupuncture points have the effect of dispersing cold and warming the Yang Qi, adults are generally appropriate for about 30 minutes, children can be shortened to about 10 minutes appropriate, if you need to stop moxibustion in time. Clinical specific to the individual situation prevail, there is no fixed time. 1. Moxibustion time is too short: If the moxibustion time is too short, the warmth and heat can not penetrate into the body, and can not achieve the therapeutic effect. 2. Moxibustion time is too long: moxibustion time is too long, then passive inhalation of smoke, may stimulate the respiratory tract leading to itchy throat, cough, etc.; moxibustion treatment epidermal temperature can reach 60 ℃ or so, the time is too long, may cause the local skin blisters, burns caused by mild burns. Too long moxibustion may make the local skin bright red rash with itchy, resulting in allergic dermatitis; there are some patients long time moxibustion may be dry mouth bitter and other symptoms of fire. Moxibustion acupuncture point is suitable for Yang deficiency cold body, Yin deficiency internal heat or real heat fake cold body with caution, so the use of moxibustion can be used under the guidance of a doctor to avoid adverse consequences.