Objective To investigate possible associations between myopia and measures of Traditional Chinese Medicine（TCM）body constitution in a sample of 8-18 years old Beijing school children. Methods School children were outpatients during the period from 2012 July to 2012 September in Department of Ophthalmology of Beijing Tongren Hospital. Children’s TCM body constitutions were assessed through questionnaire. Statistical analysis was performed by Logistic regression analysis. Results Compared with balanced TCM constitution， unbalanced TCM constitution was significantly higher risk of suffering from myopia（OR， 2. 361；95% CI， 1. 137-4. 901） . At the P<0. 05 level， using Logistic stepwise regressive analysis， Qi-deficiency was sifted as the main physical factor of myopia. Conclusion Unbalanced constitution can increase the risk of myopia. In the 8 unbalanced constitutions， Qi-deficiency is the main physical factor of myopia.