High-energy　radiation　detection　and　imaging　technology　has　significant　applications　in　high-energy　physics　research,　medical　imaging,　and　industrial　monitoring.　Lead-free　metal　halides　exhibit　exceptional　potential　for　conducting　indirect　detection　of　high-energy　radiation　due　to　their　characteristics　of　low　toxicity,　strong　stability,　high　light　yield,　and　large　Stokes　shift.　This　paper　reviews　the　most　recent　advances　in　lead-free　metal　halide　scintillator　materials　for　X-ray　imaging.　Subsequently,　it　lists　the　most　important　parameters　of　scintillator　performance　and　introduces　the　production　procedures　for　single　crystal,　powder,　and　nanocrystal　scintillators.　Furthermore,　it　discusses　the　manufacturing　of　scintillator　films　with　improved　performance,　focusing　on　large-area　flexible　scintillator　films　and　the　coupling　with　microstructures.　Finally,　it　discusses　current　challenges　and　opportunities　for　enhancing　X-ray　imaging　using　lead-free　metal　halide　scintillator　materials.