To understand the TCM constitutional types and clinical syndromes of Type II Diabetes and pursue the relation among constitutional types， syndromes，other factors and asthma by investigating multi-factors in 270 patients with Type II Diabetes so as to provide evidence for the prevention and treatment of the asthma. Methods: Two hundred and seventy patients with Type II Diabetes were selected to study their TCM constitutional types and clinical syndromes by questionnaires. The distribution of the TCM constitutional types and clinical syndromes were mastered by statistics analyzing the information above. Results: The main constitutional types of Type II diabetes were phlegm-damp type (77cases， accounting for 28.52%， yin-deficiency type (63 cases， accounting for 23.33%)， damp-heat type and qi-deficiency type (42 cases， accounting for 15.56%). As for the TCM clinical syndromes，89 cases（32.96%）were phlegm and heat (damp) syndrome， 64cases (23.70%) were qi and yin deficiency syndrome，53 cases(19.63%) were syndrome of yin deficiency of liver and kidney， 22 cases (8.15%) were deficiency syndrome of both yin and yang， 30 cases (11.11%) were blood stasis， and 27 cases (10.00%) were phlegm turbidity syndrome. The factors such as sex， age would affect the distribution of TCM constitutional types and clinical syndromes. Conclusion: The main constitutional types of Type II Diabetes patients are phlegm-damp type， yin-deficiency type， damp-heat type and qi-deficiency type. Most patients have the TCM clinical syndrome of phlegm heat (wet). Factors such as sex and age affect the distribution of TCM constitutional types and clinical syndromes. This conclusion provides the objective evidence for the clinical syndrome differentiation and treatment of Type II Diabetes.