Objective To compare the clinic effect of reconstructing the calcaneus defect with the Ⅱ-shaped and V-shaped fibula flap. Methods First by establishing the simplified model of theⅡ-shaped and V-shaped fibula flap, simulating the reconstruction of the heel defect, than we compared the stability as the index of evaluating the functions by structural mechanics. Results Theoretical data were gained based on the simplified model. Theoretical calculation indicated that the stability of Ⅱ-shaped had an obvious advantage than V-shaped. After reconstructing with two methods, both fibular flaps have been modified as calcaneus to satisfy the new circumstance. Conclusion Considering the fact that the defect of heel needs restoration for mechanics and clinic, the Ⅱ-shaped fibula flap is supe