Objective The finite element method was used to compare the impact of various fixation methods on stability in pediatric humeral proximal fractures at different heights. Methods Different pediatric humeral transverse fracture models were created at varying heights and fixed using Elastic Stable Intramedullary Nailing(ESIN) and kirschner wire with different configurations. These models were imported into ANSYS 2019 to simulate the gravity of the upper limbs and the seven working conditions of anterior flexion, posterior extension, adduction, extension, internal rotation, and external rotation. The mean maximum displacement of the distal humerus and the maximum stress of the fixation were analyzed. Results The average maximum displacement of the distal end of the humerus was the smallest when Kocher's needle was fixed below the P1, P2, P3, and P4 fracture surfaces, respectively, for the 4-pin group (1.728mm), 3B group (1.678mm), 4-pin group (1.821mm), and 4-pin group (2.212mm) Conclusion. ESIN are preferable for fixing fractures at a lower position, while four kirschner wire are more effective than ESIN at all heights.