This study aims to predict the deformation distribution of thin-walled complex components formed via Selective Laser Melting (SLM), utilizing a thermal mechanical coupling analysis approach. The effectiveness of the results was evaluated by determining shape deviation. Numerical simulation was employed to depict the SLM forming process of TC4 alloy crowns, yielding the deformation distribution and shape discrepancy subsequent to SLM formation. SLM was executed on representative crown samples, which were later subjected to scanning by an ATOS CS5M 3D scanner. The resultant crown shapes were then aligned with the original crowns to assess their conformity. The results showed that the thermal mechanical coupling analysis method may serve as an effective tool for predicting crown deformation post-SLM processing.