Anti-malarial drug resistance poses a significant challenge to global malaria control efforts, necessitating a deeper understanding of the evolutionary dynamics underlying the emergence and spread of resistance. This study explores how evolutionary theory provides a framework for elucidating the molecular mechanisms and genetic variation within parasite populations that drive resistance evolution. Drawing on recent research findings, we discuss the role of natural selection, genetic diversity, and fitness costs in shaping resistance phenotypes. Additionally, we highlight the implications of evolutionary insights for antimalarial drug policy, treatment guidelines, and future research directions. By integrating evolutionary biology principles with molecular epidemiology, this review aims to inform strategies for combating antimalarial drug resistance and advancing malaria treatment efforts. Using evolutionary theory to understand the dynamics of antimalarial drug resistance at the molecular level, we explored the influence of genetic variation within parasite populations on the emergence and spread of resistance. Antimalarial drug resistance poses a formidable challenge to global malaria control. By applying evolutionary theory to understand the dynamics of resistance emergence and spread at the molecular level, researchers can develop more effective strategies for surveillance, prevention, and treatment of drug-resistant malaria.