【Objective】To explore the correlation between the falling height and the fracture degree of skull and extremity bones.【Methods】A total of 66 cases of high falls with no-obstacles and hard contact surface that occurred in Yuexiu District of Guangzhou from June 2014 to May 2018 were collected，in which only fractures of skull and（or）extrem⁃ ity bones were observed. Of these cases，1 to 3 points were assigned to linear fractures，comminuted fractures，and open fractures respectively in reference to“Human Injury Degree Appraisal Standard”，and each site of fractures could receive a unique maximal abbreviated injury scale（MAIS）value from Abbreviated Injury Scale（AIS）2005. The sum of unique MAIS to different fracture sites indicated the total severity of those fractures（FT）. Multiple linear regression analysis was performed on the falling height（Y）and FT of skull and extremity bones，age and gender.【Results】Age was an influen⁃ tial factor in the classification and quantification of fracture degree. There was a strong positive correlation between skull FT or extremity bones FT（r1  = 0.698 or r2   = 0.780）and Y，＾Y（m）= 6.660 + 2.843 × skull FT + 2.664 × extremity bones FT-0.099 × Age，R2 = 0.871，SE = ±4.577 m.【Conclusion】Our results suggest that the total severity of skull fracturesand extremity bones fractures are two important indicators for the prediction of falling height. The mathematical model for prediction of falling height may be practical and applicable in related studies for the reason that it is confirmed in the earlier literatures.