Objective To study the clinical characteristics of syndrome types of laryngeal cough ,in order to provide an epidemiology basis for classification diagnosis. Methods Medical history,clinical signs and symp-toms of patients with laryngeal cough were collected. And questionnaire survey was carried out. Results (1)Of the 4 syndrome types,compared with wind evil invading lung type laryngeal cough incidence,the insecure defen-sive exterior and intrinsic special type showed no statistical difference(P>0.05). And the comparative differences between the rest 2 groups are of statistical differences(P < 0.05).(2)The onset time was analyzed. The results show laryngeal cough incidence from yin deficiency type and fire hyperactivity type showed no statistical difference (P > 0.05). The rest are all of statistical difference(P < 0.05).(3)The clinical course was analyzed. No differ-ence was found between spleen deficient phlegm type ,yin deficiency and fire hyperactivity type laryngeal cough (P>0.05). Differences of the rest 2 groups showed statistical difference(P<0.05).(4)The state of illness was analyzed. The results showed statistical difference between spleen phlegm type and yin deficiency and fire hyperac-tivity type(P<0.05). No statistical difference can be found between the rest 2 groups(P>0.05).(5)The cross-tab chi-square test was carried out on the 4 groups of syndromes on the nasal allergy eye and allergy concomitant incidence. The results showed that there was no significant difference between the 4 groups(P>0.05).(6)On the phlegm part,the results showed difference between wind evil invading lung type and yin deficiency and fire hyper- activity type laryngeal cough(P>0.05). Differences between the rest 2 groups are of statistical significance(P<0.05).(7)Foreign body sensation was analyzed. The results showed no difference between insecure defensive exte-rior and intrinsic special type and wind evil invading lung type ,deficient spleen phlegm type and yin deficiency and fire hyperactivity type(P>0.05). Differences between the rest 2 groups are all of statistical significance(P<0.05). Conclusions The 4 groups of syndrome types,insecure defensive exterior and intrinsic special type and wind evil invading lung type are the most common. Deficient spleen phlegm type is middle ,yin deficiency and fire hyperactivity type come next. Cough caused by wind invading lung mainly occurs in the evening. Its duration is usually within 1 month. It may be accompanied by phlegm with or without occasional pharyngeal paraesthesia. The daily life is usually unaffected or slightly affected. Cough caused by deficiency of vital energy and specific intrinsic quality mainly occurs in the morning. Its duration is usually 3 months to 1 year. It may be accompanied by less phlegm or no phlegm without or with occasional pharyngeal paraesthesia. The daily life is unaffected or slightly affected. Cough caused by Yin deficiency and fire hyperactivity occurs from time to time. It duration is more than 1 year. It may be accompanied by phlegm with pharyngeal paraesthesia. The daily life is unaffected or seriously affected. Cough caused by spleen deficiency and phlegm turbidity mainly occurs in the morning. Its duration is more than 1 year. It may be accompanied by more phlegm with pharyngeal paraesthesia. The daily life is seriously affected.