The utility model provides a calibration mechanism and pipe fitting production equipment with the calibration mechanism, the calibration mechanism is used for carrying out roundness correction processing and straightening processing on a circular pipe moving along a preset direction, the calibration mechanism comprises a roundness correction unit, and the roundness correction unit is provided witha roundness correction groove matched with the circumferential outer surface of the circular pipe; the straightening unit is provided with a straightening channel for the round pipe to pass through;the clamping assembly is arranged on the side, away from the straightening unit, of the roundness correction unit, and the clamping assembly comprises a first clamping part and a second clamping partwhich are oppositely arranged; wherein the first clamping part and the second clamping part are arranged in a relatively movable mode so that the first clamping part and the second clamping part can clamp or release the round pipe. The calibration mechanism solves the problems that in the prior art, a copper pipe is straight, and the roundness correction efficiency is low.