PURPOSE: To make it possible to exchange a pole easily in a short time by fastening or releasing a fastener in a bearing body buried in a shoulder, etc., to fasten or release a holder of pole with chuck-claws.

CONSTITUTION: A pole bearing device 4, spacers 9, chuck-claw guides 10 and parting members 14 are assembled, a built-up body is stored in a form to place concrete between the built-up body and form to solidity. After that, for bearing a pole by means of the bearing device, first of all, a hole is bored in a shoulder, etc., and a concrete bearing body 1 is buried in the hole in a state to make its recesses 3 as the upper surfaces. Then, the chuck-claw guides 10 are inserted to interlock a cap interlocking recess 8 with a turning stop bearing 5 of the bearing device 4. Successively, notches 12 of chuck-claws 11 are inserted to hold and fix the pole 6. After that, a space between adjacent chuck-claws is also blocked, and the parting members 14 are filled with fillers 15 to complete pole bearing.