Objective To study the distribution of syndrome factors and primary syndrome types of chronic pulmonary heart disease（CPHD）with respiratory failure

to provide evidence for further studies on its syndrome distribution.Methods The related data of demography

biology

and sociology of 330 CPHD in-patients with respiratory failure were collected by a retrospective method

and all data were analyzed by SPSS13.0 statistical package.Results Totally 327 qualified questionnaires were achieved.In the 10 nature factors

phlegm appeared most frequently（frequency 65.75%）

with a constituent ratio of 32.48% followed by the type of heat and qi deficiency.In the 7 location factors

the lung was most frequently involved（frequency 77.98%）followed by kidney and spleen.In the 15 primary syndrome types

phlegm heat appeared most frequently（frequency 34.56%）followed by the type of kidney qi deficiency

blood stasis

phlegm damp

and lung qi deficiency.Conclusion Phlegm

heat

deficiency

and blood stasis are the main syndrome factors of CPHD with respiratory failure

and the type of phlegm heat syndrome

kidney qi deficiency syndrome

blood stasis syndrome

phlegm damp syndrome

and lung qi deficiency syndrome are the primary syndrome types.