In　this　paper,　we　report　an　approach　to　chemically　synthesize　PrCo5　nanomagnet　with　high　performance.　The　synthesis　starts　with　the　fabrication　of　composite　containing　Pr(OH)(3)　nanorods　and　Co(OH)(2)　nanoflakes　by　the　hydrothermal　process,　which　can　be　further　reduced　by　Ca　to　yield　380　nm　PrCo5　single-crystal　particles.　These　particles　can　be　suspended　in　epoxy　and　aligned　into　nanomagnet,　leading　to　a　large　coercivity　of　13.1　kOe,　high　remanence　of　0.8,　and　magnetic　energy　product　of　14　MGOe,　which　is　among　the　highest　values　for　PrCo5　magnets.