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This research aimed to analyze the results of a hip joint implant made from Mg alloy using experiment and simulation methods with Finite Element Analysis (FEA). The experiment methods target was to observe the microstructure, crystallite size, and magnesium alloy chemical composition. The simulation method was designed to analyze the total deformation, maximum principal stress, and maximum shear stress with time and load variations. This research used SEM, XRD, and XRF analysis to obtain the above data where as FEA simulation used the ANSYS software. The simulation was conducted through walking, jumping, and walking down the stairs activities for 0 until 4.5 seconds. The SEM results showed that Mg alloy powder had an irregular shape or non-uniform particles with cracks or porous. The XRD results indicated that the crystallite size was 0.516 imes10^{4} nm. Then, the XRF results presented that Mg alloy powder had 11 % Mg, 61.17 % Ca, and 5.73 % Zn. FEA analysis results showed that the hip joint implant had a total deformation of 0.38 nm in walking activity, 0.82 nm in jumping activity, and 0.90 nm in walking down the stairs activity. The maximum shear strains were 125.98 MPa in walking, 264 MPa in jumping, and 291 MPa in walking down the stairs. The maximum principal stress in walking activity was 192.76 MPa, in jumping was 397.48 MPa, and in walking down the stairs was 438.85 MPa