Flower-like　Ni(OH)2　microspheres　were　successfully　synthesized　with　a　facile　template-free　liquid　process　with　hydrofluoric　acid　solution　as　the　nickel　ion　ligand　to　form　nickel-fluoro　complex,　NH3　aqueous　solution　as　the　OH-　supplier　and　supplemental　nickel　ion　ligand.　The　flower-like　Ni(OH)2　microspheres　were　composed　of　dozens　of　nanoflakes　with　α-Ni　(OH)2　and　^beta;-Ni(OH)2　mixed　crystallinity.　Morphologies　of　the　Ni(OH)2　microspheres　are　influenced　greatly　by　Ni(II)　concentrations　while　other　solution　conditions　are　fixed.　When　Ni(II)　concentration　is　0.03　mol/L,　the　uniform　flower-like　Ni(OH)2　microspheres　with　average　diameters　of　about　2μm　were　obtained　and　composed　of　nanoflakes　with　length　of　about　400　nm　and　thickness　of　about　60　nm.　The　formation　mechanism　from　aggregation　growth　and　surface　growth　to　surface　dissolution　was　proposed,　which　was　in　good　agreement　with　observation　on　the　Ni(OH)2　samples　during　the　reaction　process.