Ningwu volcanic basin is an important mineral district in the Middle-Lower Yangtze River metallogenic belt, and apatite is one of the important minerals in the iron deposits. The Taocun iron deposit is one of the representive deposit in the Ningwu basin. Electron microprobe and LA-ICP-MS analyses have been done on the Ap-I from pyroxene dioritr porphyry, Ap-D from disseminated magnetite ore and Ap-V from vein-type magnetite ore in the Taocun iron deposit. Electrom microprobe anlyses results show that all the apatite in the Taocun iron deposit are fluorapatite, with a narrow range of major elements, and contains some S and Cl. Laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) analyses shows that Ap-I contains singnificant concentration of Na、Mg、Si、V、Mn、Fe、Ga、Ge 、Sr、Y、Zr、Ba、REE、Pb、Th and U. Ap-D also concentrate Na、Mg、Si、V、Mn、Fe、Ga、Ge 、Sr、Y、Zr、Ba、REE、Pb、Th and U, with variable content of Al、Sc、Cr、Ni and Cu. Ap-V shows a weak differences compared to the Ap-D, Al、Sc、Cr、Ni and Cu are relatively lower. The evolution characteristics of Zr、Y、Lu、Yb、Mn andδEu, and the REE patern indicate that the ore-forming fluids of the disseminated and the vein type mineralization origined from pyroxene diorite porphyry. Forwared to the vein-type mineralization, the ore-forming fluids becomes more oxide and contains less trace elements (e.g. Y, REE). The Taocun iron deposit is a diorite porphyry related hydrothermal deposit. The geochemical composition of apatite among the Taocun iron deposit, the Kiruna type deposit and IOCG deposits shows some differents, which indicate that the Ningwu porphyritic iron deposit is not belongs to the Kiruna type deposits and the IOCG type deposit.