The invention discloses a swinging steel pipe equidistance cutting device. The left end of a driving shaft is fixedly connected with a first bevel gear; the first bevel gear is engaged with a second bevel gear; the second bevel gear is fixedly connected with the middle part of a driven shaft; the lower end of the driven shaft is fixedly connected with a semi-bevel gear; the semi-bevel gear is provided with teeth on one half and no tooth on the other half; third bevel gears are arranged on the two sides below the semi-bevel gear, and are fixedly connected with rotating shafts; the tooth part ofthe semi-bevel gear is engaged with the third bevel gears; the right ends of the rotating shafts are fixedly connected with small gears; the small gears are engaged with large gears; the right sidesof the large gears are fixedly connected with the upper ends of swing rods; and cutting blades are arranged at the middle parts of the lower ends of the swing rods. The device uses the small gears fordriving the swing rods to swing back and forth; when the swing rods swing, a first transmission belt drives the cutting blades to rotationally cut to realize swing cutting; and a fixed disc and a ratchet are used for realizing intermittent one-way rotation of a lead screw to achieve intermittent feeding function of pipes so as to finally achieve equidistance cutting effect of pipe fittings.