Early people painted a picture of a tiger, rooster, or other animal over their doorways to ward off the diseases, ghosts, and spirits which they feared might otherwise enter in.
因為有了家屋以後，門扉擔負起防止猛獸蟲害的任務，而在相信鬼神的時代裡，人畏懼猛獸、病毒、鬼靈之害自門而入，於是發展出在門上畫虎、畫「雞王鎮宅」等門畫的風俗。