Aluminum-rich　hierarchical　MFI-type　zeolites　with　high　acidic-site　density　exhibit　excellent　activity　and　selectivity　in　bulky　molecule-involved　reactions.　However,　it　is　challenging　to　develop　a　facile　and　environmentally　benign　method　for　fabricating　them.　Herein,　we　employ　a　polymer　that　does　not　contain　nitrogen　and　halogen　elements　to　successfully　synthesize　aluminum-rich　hierarchical　ZSM-5　zeolite　with　a　Si/Al　ratio　of　8　and　a　significant　number　of　mesopores　comprised　of　oriented-assembled　nanocrystals.　It　is　demonstrated　that　the　nitrogen-　and　halogen-free　polymer　is　instrumental　in　the　formation　of　the　ZSM-5　zeolite　by　serving　as　a　template　for　constructing　the　hierarchical　micro/mesoporous　structure.　Moreover,　this　polymer　also　acts　as　a　crystal　growth　modifier　to　form　a　single-crystalline　zeolite.　Notably,　the　resultant　zeolite　shows　a　better　catalytic　performance　in　converting　waste　plastic　into　hydrocarbons　than　a　commercial　one.　Our　work　enables　the　synthesis　of　high-quality　hierarchical　zeolites　without　requiring　quaternary　ammonium　templates.