Objective:To annalyze the constitution rule and pathogenesis of Diabetic Peripheral Neuropathy (DPN) by data mining technology, so as to provide a theoretical reference for improving the therapeutic effect of TCM on treating DPN.Methods:343 cases of DPN patients dianosed with four TCM diagostic methods chosen from the Department of Endocrinology of Affiliated Hospital of Traditional Chinese Medicine of Guangzhou Medical University from January 2016 to January 2020 were collected. Statistical analysis software was used to conduct frequency analysis, correlation analysis and cluster analysis, and explained with TCM theory.Results:Among the 343 cases, 143 cases were male and 200 cases were female; Symptoms such as limb numbness, thirst, dry mouth, frequent urination at night, limb pain and so on occur more frequently; The main tongue images include thin white tongue, dark and red tongue or light red tongue; the main pulse conditions include string, fine and deep pulse. Numbness, thirst, dry mouth, thin and white fur, frequent nocturia and so on were closely related with other diseases. Four types of syndrome can be recombined by cluster analysis, which are blood stasis obstructing collaterals syndrome; kidney deficiency and blood stasis syndrome; stomach heat injuring Yin syndrome; spleen deficiency and phlegm dampness syndrome; heat toxin accumulation and syndrome of lingering pathogen due to deficient vital qi.Conclusion:The root of the disease is Yin deficiency with dry heat as the sympotom. Blood stasis runs through the whole process of the disease. The function of spleen and stomach should not be ignored in treatment.