To reduce an assist of an operator as much as possible, and improve tracing efficiency.

An eyeglasses frame shape tracing device comprises: movement means for moving a probe along a bevel groove of a rim; detection means that detects a movement position of the rim; control means that controls the movement means to obtain tracing data on an entire circumference shape; and determination means that, when there is a steep change in the tracing data obtained in a predetermined moving radius range from an initial tracing start point where the probe comes into contact with the rim, determines a tracing error. When it is determined that the tracing is the tracing error, the control means determines whether or not the probe is inserted into the bevel groove on the basis of tracing data obtained when a predetermined operation for inserting the probe into the bevel groove is performed or determines whether or not on the basis of at least one of tracing data obtained when it is determined that the tracing is the tracing error and tracing data obtained thereafter, and obtains tracing data on a rim entire circumference by moving the probe along the bevel groove from a position having the probe inserted into the bevel groove.