Objective To investigate the correlation between syndrome elements and diagnostic indicators in pneumonia. Methods The distribution characteristics

syndrome elements and combination rule of Chinese medicine syndrome in pneumonia patients were analyzed with computer and manual search. Results The top 10 syndromes in descending order of the frequency were as following: wind-heat assailing the lung

phlegm-heat congesting the lung

both qi and yin deficiency

heat entering the pericardium

evil entering and right desertion

evil heat congesting the lung

wind-cold fettering the lung

phlegm-damp obstructing the lung

wind-dryness damaging the lung and exterior cold and interior heat. In the syndrome composition

repletion syndrome and deficiency-repletion complex syndrome accounted for the majority. Both the repletion syndrome and the deficiency syndrome were more than the deficiency-repletion complex syndrome

especially the repletion syndrome. The simple syndrome was less. The common syndrome elements of pneumonia were the lung in disease location

heat and phlegm turbidity in disease nature and wind and heat in pathogen. Conclusion The syndrome elements and diagnostic indicators in pneumonia could be initially identified to improve the clinical level and the quality of life in patients.