Objective:To investigate the common diseases and the Constitution of Traditional Chinese Medicine of plateau-related soldiers, and explore the correlation between them.Methods:A total of 271 plateau-related soldiers in our sanatorium from January 1, 2020 to December 31, 2020 were selected as the subjects. All of them were assessed by the TCM constitution scale and the self-designed disease questionnaire and Sociodemographic information.Results:Eighty two percent of 271 plateau-related soldiers were regarded as paranoid constitution and 17.7% were gentleness type. There 73.1% of plateau-related soldiers had one or more diseases, and 90.9% of them were paranoid constitution. There were 47 cases of respiratory diseases, including 2 cases of gentleness type (4.3%) and 45 cases of paranoid constitution (95.7%); 53 cases of digestive system diseases, including 1 case of gentleness type (1.9%) and 52 cases of paranoid constitution (98.1%); 27 cases of skin diseases, including 1 case of gentleness type (3.7%) and 26 cases of paranoid constitution (96.3%); 148 cases of musculoskeletal diseases, including 15 cases of gentleness type (10.1%) and 133 cases of paranoid constitution (89.9%). The digestive system diseases with the highest proportion of paranoid constitution were selected for TCM Constitution correlation analysis, suggesting that there was a correlation between them( χ2=11.32, P<0.01). People including Qi deficiency and phlegm-dampness were more prone to digestive system diseases ( P<0.01). There was a significant negative correlation between gentleness type and digestive system diseases [ OR=0.17, 95% CI(0.040-0.726); P=0.017], as well as Qi deficiency [ OR=4.98, 95% CI(2.717-9.120)] and phlegm-dampness [ OR=12.00, 95% CI(5.269-27.332)]were risk factors for them ( P<0.01). Conclusions:The overall health level of plateau-related soldiers was not optimistic. The digestive system diseases of them were positively correlated with Qi deficiency and phlegm-dampness.