The invention provides an auxiliary fixing brace for iconographic evaluation. The auxiliary fixing brace comprises a
lying board, a first vertical fixing plate, a second vertical fixing plate, a lateral limiting part, two adjusting mounting parts and a joint driving part, wherein the
lying board has certain length and width and is fixedly connected with the first vertical fixing plate and the second vertical fixing plate; the lateral limiting plate is provided with a first side plate and a second side plate, of which end parts are connected, and the two adjusting mounting parts respectively penetrate through the first side plate and the second side plate and are connected with a
tibia side and a thighbone side of a patient; and the joint driving part is mounted at a position where the first side plate and the second side plate are connected. According to the auxiliary fixing brace, an affected limb can be fixed, then, a
knee joint of the patient is pushed to be turned inwards or outwards to reach a stress position, the stress position can be kept for a certain time, a doctor can conduct X-
ray shooting on the affected limb, the doctor does not need to manually keep to help the affected limb to reach the stress position for shooting, and meanwhile, the doctor does not need to be exposed in a
ray environment, so that the safety is higher.