The invention discloses a preparation method of a luggage case fabric. The preparation method comprises the following steps: (1) producing a basic cloth; (2) drying in a waterproof manner; (3) dryingin a fireproof manner; (4) calendaring; (5) re-performing the waterproof drying again; (6) re-performing the fireproof drying again; (7) re-calendaringagain; (8) coating and forming a film; and (6) waxing. The preparation method of the luggage case fabric is simple in process and suitable for the industrialized production; and moreover, the prepared environment-friendly case coating fabric is highin surface flatness, soft in hand feeling, and wide in market application prospect.