4D　printing　of　the　barium　ferrite　permanent　magnets　provides　new　opportunities　for　intelligent　structure　and　process　innovation　of　permanent　magnets.　In　this　paper,　the　preparation,　filament　manufacture,　and　intelligent　printing　methods　with　shape　memory/recovery　effect　are　studied　for　the　barium　ferrite　permanent　magnet.　Firstly,　the　PLA/TPU/BaFe12O19　composite　materials　are　developed　by　adding　different　contents　of　ferrite　permanent　magnet　BaFe12O19　powders　into　the　PLA/TPU　(polylactic　acid/thermoplastic　polyurethane)　matrix.　The　weight　percentage　of　the　BaFe12O19　is　10-40　wt%　with　an　interval　of　10　wt%.　Secondly,　the　composites　are　pelletized　and　further　extruded　to　manufacture　composite　filaments　with　different　BaFe12O19　contents.　Scanning　electron　microscope　(SEM)　is　used　for　the　microstructural　analysis.　The　BaFe12O19　particles　are　uniformly　distributed　in　the　PLA/TPU　matrix,　and　the　slight　particle　agglomeration　phenomenon　occurs　in　the　composite　filaments　with　30　and　40　wt%　BaFe12O19.　The　thermal　properties　of　PLA/TPU/BaFe12O19　composite　filaments　are　analyzed　by　thermogravimetric　analysis　(TGA)　and　differential　scanning　calorimetry　(DSC).　After　adding　the　barium　ferrite　particles,　the　glass　transition　temperature　of　the　composite　filaments　changes　within　a　small　range　from　53.5　degrees　C　to　55　degrees　C.　Thirdly,　the　filaments　are　successfully　manufactured　to　magnet　parts　by　the　fused　deposition　modeling　(FDM)　3D　printing　for　the　tests　of　mechanical,　magnetic,　and　shape　recovery　properties.　With　the　increase　of　the　barium　ferrite　content,　the　magnetic　properties　show　a　rising　trend,　proving　the　feasibility　of　using　3D　printing　technology　to　make　magnets.　The　shape　memory　effects　of　the　printed　parts　are　excellent　and　the　shape　recovery　ratios　show　a　rising　trend,　from　85.6　%　to　88.9　%　under　heat　contact　stimulus　and　from　88.9　%　to　97.8　%　under　electromagnetic　induction　non-contact　stimulus.　Relatively,　the　parts　hold　fast　response　speed　due　to　direct　contact　with　the　heat　source　under　the　heat　stimulus,　and　the　parts　hold　higher　shape　recovery　ratios　due　to　more　heats　produced　under　the　electromagnetic　induction　stimulus.　The　addition　of　magnetic　particles　is　helpful　to　improve　the　heat　transfer　ability　and　provide　the　possibility　of　non-contact　heat　transfer.　The　magnetic　parts　with　complex　structure　and　intelligent　shape　memory/recovery　effect　can　be　achieved　for　special　application　requirements.　As　a　result,　the　research　of　this　paper　expands　preparation　methods　of　new　magnetic　composite　materials,　explores　the　manufacture　process　for　intelligent　magnets　and　lays　a　solid　foundation　for　the　development　of　new　permanent　magnet　devices.