Objective:To summarize and analyze the characteristics of four diagnostic information about pungent-warm medicinal formulas in the treatment of sore throat with Yin syndrome. Methods69 cases that met the inclusion criteria were collected. After standardized processing,related information were exported into EXCEL in the form of structured data. These data was analyzed by the Fisher exact probability test and association rules Apriori algorithm analysis and formed the result reports.  Results:①Mahuang Fuzi Xixin decoction,Fuzi Ganjiang decoction,pinellia powder or decoction, Sini decoction were used as common prescription for sore throat with Yin syndrome. ②In the inspection of tongue picture,pale and moist tongue with saliva and white fur were often observed,which showed the local characteristics of throat as hyperemia and antiadoncus and whole state of mental sluggishness. In the pulse feeling and palpation,deep or thready or weak pulse and cold of hands and feet were often presented. In the auscultation and olfaction,the hoarse voice of patients could be found,with common accompanied symptoms of throat infarction, aversion to cold, dry throat and cough at the same time. ③In the medical history,patients often suffered wind-cold and poorly responsed to the prescription of clearing-heat and detoxifying,antibiotics and drugs of nourishing yin and clearing-heat,or even got worse. ④There were certain correlation among the cause of suffering cold-wind,the history characteristic of poor response to conventional treatment and the formation of typical tongue and pulse.⑤For the four diagnostic information of“red complexion ,frequent urination,enlarged and teeth-marked tongue with white coating”,types of prescription with aconite and dried ginger,as well as ephedra vulgaris and cassia twig,could be applicated with statistical significance(P<0.05). For the distinction between the two types prescription,the information of “angina light in day and heavy in night ,pharynx hyperemia,dislike drinking and like hot-drinking”was not statistically significant(P>0.05).  Conclusion:In sore throat with Yin syndrome,there were certain correlation among the cause,the history characteristic,the common symptom and the formation of typical tongue and pulse,connected through body constitution. For the four diagnostic information of“red complexion ,frequent urination,enlarged and teeth-marked tongue”,type of prescription with aconite and dried ginger could be applicated；for“tongue with white coating”,type of prescription with ephedra vulgaris and cassia twig could be applicated.