A waist supporter structure with an auxiliary belt includes a waist pad, two knee wraps installed to both sides of the waist pad respectively and including a first belt member and a second belt member fixed to the waist pad and extended from both sides of the waist pad respectively, and two auxiliary waist belt devices fixed to both sides of the waist pad and extended from the sides of the waist pad respectively and including a first waist belt member and a second waist belt member, and the waist belt members are wound around a user's waist and buckled in front of the user's abdomen, so that when the user leaves the seat, the user needs not to readjust the waist supporting structure for reusing the structure, so as to improve the convenience of use.
