Objective： To analyze the distribution law of Chinese medicine constitution types in patients with pneumoconiosis，and to analyze whether there is difference between the distribution law and that of common people.Methods：Constitution in Chinese Medicine Questionnaire(CCMQ)was applied to investigate Chinese medicine constitution types in patients with pneumoconiosis in 3 hospitals in Shandong province.The difference of distribution law of Chinese medicine constitution types in patients with pneumoconiosis and that in common people was analyzed through statistical method.Results：In the case group，constitution types whose constituent ratio ranked the first three successively were qi-deficiency constitution， yang-deficiency constitution and qi-stagnation constitution， while constitution types whose constituent ratio ranked the last three successively were blood stasis constitution，mild constitution and damp-heat constitution.In the control group，constitution types whose constituent ratio ranked the first three successively were mild constitution，qi-deficiency constitution and damp-heat constitution，while constitution types whose constituent ratio ranked the last three successively were allergies constitution，blood stasis constitution and qi-stagnation constitution.From the perspective of individual constitution，significant differences between the case group and the control group were found in qi-deficiency constitution(the one in the case group being higher than that in the control group)，mild constitution(the one in the control group being higher than that in the case group)，yang-deficiency constitution(the one in the case group being higher than that in the control group)，and damp-heat constitution(the one in the control group being higher than that in the case group).Compared the distribution of Chinese medicine constitution types in the case group with that in the controlgroup，the difference was significant(P＜ 0.001).Conclusion：Qi-deficiency constitution and yang-deficiency constitution are likely to be the main constitution types in patients with pneumoconiosis.Due to the combination of qi-stagnation constitution，yin-deficiency constitution，phlegm-dampness constitution and other constitutions，the treatment of pneumoconiosis should focus on reinforcing qi and warming yang，soothing liver and regulating qi，nourishing yin and generating body fluid，as well as dispelling phlegm and eliminating dampness.