[Abstract]: Objective The purpose is to personalize the biomechanical properties of porous root-analogue implants, and to provide theoretical basis for the design and clinical implantation of porous root-analogue implants. Methods Based on CT data, 3-matic software was used to design the surface porous personalized root-analogue implant model, and after registering it with the mandible model, the mesh was divided and material parameters were given. The implant was loaded with 200N, and the maximum stress of the implant and the stress and strain of the bone around the implant were analyzed. Select the appropriate clinical case and implant the implant immediately after tooth extraction and conduct clinical evaluation. Results The peak stress of the surface porous personalized root-analogue implant is mainly concentrated on the interface between the solid structure and the porous structure of the implant. The maximum stress of the solid structure is 137.71 MPa, and the maximum stress of the porous structure is 37.008 MPa, which are less than its yield strength. 3D printed porous root-analogue implants have good initial stability immediately after implantation, minimal trauma, and similar mechanical transmission to natural teeth. This simplifies the surgical process, shortens the treatment time, and has high patient satisfaction. Conclusion. 3D printed surface porous root-analogue implant opens up a new method for immediate implantation after tooth extraction.