Provided is an aortic valve evaluation assisting jig which includes a partition wall member which partitions an aortic duct inner space into a space on an atmosphere open side and a space on an aortic valve side in a state where at least a part of the partition wall member is disposed in the aortic duct inner space, the partition wall member has: a seal portion which seals an evaluation liquid in a state where the seal portion is brought into contact with the aortic wall of an aortic duct inner space side； and a filling port through which the evaluation liquid is filled into the space on the aortic valve side in the aortic duct inner space.
