According to tradition, the centipede god is an incarnation of the green dragon spirit, come to earth to lend his assistance to the Great Emperor Baosheng. Because of meritorious service rendered in this capacity, he was appointed Protector of the Great Emperor.
相傳蜈蚣公是青龍神轉化，輔佐保生大帝護駕有功，因此奉旨冊封為大帝護駕，具鎮煞驅邪的能力。