Abstarct: Abstract Hot forging process of mextal parts due to effective factors from three-axis stress mode, thermomechanical loadings and the contact conditions of the die and the part has a high complexity. Today, using computer simulation forming processes, accurate process analysis and die life estimation are possible. In this research simulation of hot forging of the ingot part of the female hinge of Peugeot 206 car has been done. At the first, the forged part in DEFORM-3D software with rigid viscoplastic behavior of has been simulated, then the stresses on the part are calculated. And the force-displacement diagram was extracted. In the next step, the stress distribution is extracted in the forging die with elastic model and the critical areas of that defined. Comparison of numerical results with experimental observations, shows the acceptable accuracy of the simulation in estimating the fracture area. Then, normal pressure distribution and sliding velocity on the die surface in terms of specified time and using Archard wear model, wear rate of different points of die surface was determined. After one stroke of forging, the critical point with the most the wear depth was obtained and the results were in good agreement with experimental observations of die wear. According to allowed tolerance of dimensional changes of the output part was estimated according to DIN 7526F for die forging life. Profiles cross section of part forging after about 2500 stroke, using VMM optical measurement device and with the wear of contour obtained from the software was compared. As a suggestion, also design a preform die presented and analyzed and force-displacement diagrams were extracted and compared with one-step die. The results of this step showed that using the design of a preform die, firstly the forging energy of the final step and maximum stress of the die are redused. Also by reducing the wear depth in the dual stage process, die life of dual stage, increases from 2535 to 4186 stroks compared to die of single stage.