Ferromagnetic　nanowires　based　on　the　assembly　of　shape　anisotropy　seem　apt　candidates　as　rare-earth　free　permanent　magnetic　materials.　Here,　the　relation　between　the　head　morphology　of　the　Co　nanowires　and　their　magnetic　coercivity　is　investigated.　The　Co　nanowires　with　different　head　morphology　such　as　diabolo,　cylinder,　and　capped　cylinder　were　synthesized　via　the　polyol　process.　We　demonstrate　that　the　fine　manipulation　of　the　head　morphology　is　effective　in　enhancing　the　coercivity　of　Co　nanowires.　The　highest　coercivity　up　to　9.4　kOe　was　achieved　in　the　capped　cylindrical　Co　nanowires.　The　underlying　magnetic　reversal　mechanisms　of　Co　nanowires　with　different　head　morphology　were　revealed　through　micromagnetic　simulations.　The　enhanced　coercivity　may　attribute　to　the　quasi-coherent　magnetization　reversal　mechanism　and　the　relatively　low　and　uniform　distribution　of　local　demagnetization　field　in　the　capped　cylindrical　Co　nanowires.　This　work　can　provide　instructive　information　for　the　design　of　high-performance　ferromagnetic　nanowires　for　permanent　magnetic　applications.