PURPOSE: A method for forming a tractor rotary is provided to extend the service life of parts like tractor body and universal joint, and the like.CONSTITUTION: A method for forming a tractor rotary is as follows. An operator attaches a muddy water splash prevention plate to the front of a tractor rotary. The muddy water splash prevention plate is able to be fixed through a bolt formed therein or welding, is made of metal, is formed in an oval shape, and desirably has 6mm thickness.COPYRIGHT KIPO 2013[Reference numerals] (AA) Bolt hole (BB) Length (CC) Thickness (DD) Fixing part (EE) U-shaped hole (FF) 6 mm or more thick steel plate (GG) 6 mm or more thick (HH) Thickness (II) Length (JJ) Addition three or more (KK) Method for fixing in a hole on an arrow mark side by a bolt (LL) Fixing by welding using a bolt.