The　abuse　of　antibiotics　greatly　aggravates　water　pollution.　Tetracycline　hydrochloride　(TC),　has　been　widely　used　all　over　the　world　as　a　typical　antibiotic.　In　order　to　dispose　of　TC,　a　series　of　Fe3O4/FeP　composite　materials　were　synthesized　with　the　combination　of　hydrothermal　synthesis　and　partial　phosphating　annealing　method.　Meanwhile,　the　morphology　and　structural　characteristics　were　investigated　using　characterization　such　as　diffraction　of　X-rays　(XRD),　scanning　electron　microscope　(SEM),　transmission　electron　microscopy　(TEM),　electro-chemical　impedance　spectroscopy　(EIS)　etc.　The　dark　adsorption　and　photocatalytic　activity　of　Fe3O4/FeP　were　investigated　comprehensively　to　remove　the　target　molecule　tetracycline.　Results　indicated　that　Fe3O4/FeP　catalysts　have　a　superior　performance　on　dark　adsorption,　and　good　effect　of　TC　degradation.　Among　synthesized　photocatalysts,　Fe3O4/FeP-6　(molar　ratios　of　Fe:P　at　1:6)　possessed　the　optimized　performance　in　adsorption　capacity　and　photodegradation　efficiency　(88%)　comparing　to　the　other　ratios.　Furthermore,　the　stability　and　reusability　of　Fe3O4/FeP-6　ensured　the　cyclic　photocatalysis　experiment.　This　synthesized　catalyst　has　proved　its　potential　application　in　wastewater　treatment.