The invention discloses a molding device for an aerial tire traveler with super-small specification which is applied to the tire production. The molding device comprises a molded steel ring which is arranged on a rotary disk and comprises a fixed steel ring segment, a locking steel ring segment and a regulating steel ring segment. The fixed steel ring segment is arranged fixedly. One end of the locking steel ring segment is hinged with the rotary disk. A steel wire head clamping clearance is formed between the locking steel ring segment and the fixed steel ring segment. A locking mechanism ofthe locking steel ring segment is a positioning pin which is arranged axially. A pin head is matched in a positioning hole which is arranged in the rotary disk in rotating way. An eccentric circle arranged on a pin body is in contact with the locking steel ring segment. The offset distance maximum of the eccentric circle can result in that the locking steel ring segment locks the steel wire head tightly. The regulating steel ring segment is a continuous arc segment. A kidney hole, by which the regulating steel ring segment can offset in diameter direction, is arranged on the rotary disk corresponding to the position of an installation hole on the regulating steel ring segment. After perforating the installation hole and the kidney hole, a bolt fixes the regulating steel ring segment on therotary disk. The molding device for the aerial tire traveler with super-small specification which is applied to the tire production has the advantages of simplified structure and convenient and fastprocessing, installation and use.