The　poor　machinability　of　halide　perovskite　crystals　severely　hampered　their　practical　applications.　Here　a　high-throughput　growth　method　is　reported　for　armored　perovskite　single-crystal　fibers　(SCFs).　The　mold-embedded　melt　growth　(MEG)　method　provides　each　SCF　with　a　capillary　quartz　shell,　thus　guaranteeing　their　integrality　when　cutting　and　polishing.　Hundreds　of　perovskite　SCFs,　exemplified　by　CsPbBr3,　CsPbCl3,　and　CsPbBr2.5I0.5,　with　customized　dimensions　(inner　diameters　of　150-1000　mu　m　and　length　of　several　centimeters),　are　grown　in　one　batch,　with　all　the　SCFs　bearing　homogeneity　in　shape,　orientation,　and　optical/electronic　properties.　Versatile　assembly　protocols　are　proposed　to　directly　integrate　the　SCFs　into　arrays.　The　assembled　array　detectors　demonstrated　low-level　dark　currents　(＜　1　nA)　with　negligible　drift,　low　detection　limit　(＜　44.84　nGy　s(-1)),　and　high　sensitivity　(61147　mu　C　Gy(-1)　cm(-2)).　Moreover,　the　SCFs　as　isolated　pixels　are　free　of　signal　crosstalk　while　showing　uniform　X-ray　photocurrents,　which　is　in　favor　of　high　spatial　resolution　X-ray　imaging.　As　both　MEG　and　the　assembly　of　SCFs　involve　none　sophisticated　processes　limiting　the　scalable　fabrication,　the　strategy　is　considered　to　meet　the　preconditions　of　high-throughput　productions.