Extrinsic headache is a common clinical symptom of extrinsic disease with headache as the main symptom. The external attack of the six evil spirits, or direct violation of the clear air, or disturbance of the meridians, resulting in the congestion of the meridians can lead to the occurrence of external headache. The head is the “meeting of all the yang” and the “house of the clear yang”, so if one is not careful in starting and living, the external attack of the evil of wind, cold, humidity and heat can lead to external headache. Suwen: “Those who are injured by the wind are first affected by it”. Therefore, headache caused by wind is common. The wind is the longest of all diseases, and it is often accompanied by seasonal gas, so there is a difference between wind-cold, wind-heat and wind-damp headache. The onset of external headache is urgent, and it is often accompanied by symptoms of external evil that binds the table or offends the lungs, so we should first distinguish between wind, cold, damp and heat. The “Classical Evidence of Treatment”: “Those who suffer from wind are evil of wind, those who suffer from cold are evil of cold —— and those who suffer from summer heat have dry mouth”. As the meridians are affected by different evil, the headache site is also different, so we should also distinguish the part where the headache belongs to: sun headache, the pain is at the back of the head; Yangming headache, the pain is mostly in the forehead and eyebrow ridge; Shaoyang headache, the pain is at both sides; and Jueyin headache, the pain is at the top of the head. The “Secret Collection of the Orchid Chamber” treats external headaches with the six meridians and elaborates on the main symptoms and treatments. “Sun headache. The pulse floats and tightens with evil wind, Chuanxiong, Qiangwu, Dushu, Ephedra and the like are the main symptoms. —— The pain at the top of the head in the syncope, or vomiting phlegm and froth and syncope cold, its pulse floats and slows down, Wu Zhuyu Tang is the main symptom”. The influence on later generations is very deep. External headache is mostly a real evidence, the treatment should be mainly to dispel the evil. If the headache is caused by wind, it is advisable to use wind medicine to dispel wind and dispel cold; if the headache is caused by cold, dampness or heat, it is advisable to use wind medicine as a meridian inducing medicine. Clinical practice often classifies external headache as wind-cold, wind-heat and wind-damp headache. Wind-cold headache is mainly due to headache even to the neck and back, vicious wind and cold, often like to wrap the head, thin white fur, floating or tight pulse, so it is advisable to dispel wind and cold, using Chuanxiong tea-tong san as treatment; wind-heat headache is mainly due to headache and swelling, fever or vicious wind, red face and red, constipation and urination, yellow fur, floating pulse, so it is advisable to dispel wind and clear heat, using Ligusticum dahuricae gypsum soup with addition and subtraction as treatment; wind-damp headache is mainly due to headache like wrapping, heavy limbs, chest stuffiness and dullness, unfavorable urination, loose stool, thin, white and greasy fur and moist pulse. The main evidence is thinness, white greasy coating and moist pulse, so it is advisable to dispel wind and overcome dampness, using Qiangwu Shengshui Tang with addition and subtraction. The main reason for headache due to external sensation is to dispel the evil, but we should examine the evidence to find the cause and distinguish the difference between wind-cold, wind-heat and wind-damp. Those with wind should be dispersed, those with dampness should be dissolved, and those with heat should be cleared. If you see the pain and stop the pain, presumptuous use of wind medicine, is delusional. At the same time with the leading meridian medicine: such as sun headache: qiangwu, gao ben; Shaoyang headache: Chaihu, Chuanxiong; Yangming headache: dahurica, geranium; Shaoyin headache: calamus, half asia; Conjunctive Yin headache: Wu Zhuyu, Chuanxiong, and search the wind and pass through the ligament of insect medicine stiff silkworm, centipede, whole scorpion, etc., according to the meridian medicine, can achieve twice the effect with half the effort. Second, external headache is caused by the invasion of external evil, so life should be regular, moderate cold and temperature, living sometimes; careful diet, avoid smoking, alcohol and stimulating food; regulate the mood, avoid mental stimulation; strengthen exercise, enhance physical fitness, in order to resist the invasion of external evil, that is, “the righteousness exists within, evil can not dry”.