beta-Tetrakis(aminomethyl)phthalocyaninato　zinc(II)　(ZnPcN(4))　was　synthesized　from　the　reaction　of　beta-tetrakis　(phthalimidomethyl)phthalocyaninato　zinc(II)　(ZnPcP(4))　with　85%　NH(2)NH(2)center　dot　H(2)O　and　the　hydrochloride　of　ZnPcN(4)　(ZnPcN(4)center　dot　HCl)　was　obtained.　UV-Visible　electronic　absorption　spectra,　fluorescence　spectra　and　singlet　oxygen　quantum　yield　of　ZnPcN(4)center　dot　HCl　were　determined.　ZnPcN(4)center　dot　HCl　was　found　to　be　aggregated!　in　aqueous　media　but　was　partially　or　fully　disaggregated　on　addition　of　DMF　or　ROH　to　the　water　solution.　In　the　DMF/water　(10%,　V/V)/HCl　media,　as　the　concentration　of　HCl　increased,　the　absorbance　intensity　of　monomer　increased　gradually　in　the　weak　acid　solution.　It　is　no　aggregation　in　DMF/water　(10%,　V/V)/HCl　(1.2　mmol.L(-)1)　media　in　the　concentration　of　10(-5)　mol.L(-1).　However,　in　the　strong　acid　solution,　as　the　concentration　of　HCl　increased,　the　absorbance　intensity　of　monomer　decreased　gradually,　meanwhile　the　absorbance　intensity　of　monoprotonation　peak　at　713　rim　increased　to　a　small　extent.　The　maximum　absorbance　and　emission　wavelength　of　ZnPcN(4)center　dot　HCl　is　675　nm　and　681　nm　in　DMF/water　(10%,　V/V)HCl　(1.2　mmol.L(-1))　media,　respectively.　ZnPcN(4)center　dot　HCl　was　found　to　be　aggregated　in　DMF,　so　its　fluorescence　quantum　yield　and　singlet　oxygen　quantum　yield　were　small.　A　value　of　0.19　was　calculated　for　the　fluorescence　quantum　yield　of　this　photosensitizer　in　DME/water(10%,　V/V)/HCl　(1.2　mmol.L(-1)).　The　photodynamic　activity　of　ZnPcN(4)center　dot　HCl　was　evaluated　using　9,10-dimethylanthracene　(DMA).　The　singlet　oxygen　quantum　yield　was　0.58　close　to　ZnPc　with　a　promising　anti-tumor　photosensitizer　for　the　further　research.