A pipe pliers, including: a first clamping body, including a first handle portion, a first clamping portion, and a body portion connected first handle portion and the first clamping portion therebetween, the body portion including two side plates and being formed with two guiding toothed grooves, a receiving groove being defined between the two side plates, each of the side plates being formed with a sliding groove on a face thereof facing the other side plate, the two sliding grooves being parallel to the two guiding toothed grooves; a driving handle, restrictively and slidably arranged at the two guiding toothed grooves and pivotally connected to the first clamping body by a pivot portion, the driving handle having a second handle portion at an end and a protrusion at the other end; a clamping element, including a second clamping portion and a sliding piece connected to each other, the sliding piece being received in the receiving groove and slidably arranged in the two sliding grooves, the second clamping portion corresponding to the first clamping portion, the clamping element being formed with a recess, the protrusion being rotatably inserted in the recess, the protrusion being able to drive the clamping element to slide with respect to the first clamping body by the driving handle sliding or pivoting with respect to the first clamping body; wherein the pivot portion includes an elastic element and pivot button, the driving handle is formed with a pivot hole, the pivot button has at least one restriction toothed portion, the pivot button is inserted into the pivot hole and is axially slidable between a locking position and a release position, the elastic element is biased between a stopping wall of the pivot hole and the pivot button so that the pivot button tends to move toward the locking position to be locked; wherein when the pivot button is located at the locking position, the restriction toothed portion and the two guiding toothed grooves are engaged to each other so that the driving handle is unable to slide with respect to the two guiding toothed grooves; when the pivot button is located at the release position, the restriction toothed portion is separated from the two guiding toothed grooves so that the driving handle is slidable with respect to the two guiding toothed grooves; characterized in that the two sliding grooves do not overlap the two guiding toothed grooves; and a neck portion is formed between the second clamping portion and the sliding piece, each of the side plates being formed with a flange parallel to the sliding grooves, wherein the neck portion is located between the side plates, and wherein the two flanges are slidably received in the neck portion. a first clamping body, including a first handle portion, a first clamping portion, and a body portion connected first handle portion and the first clamping portion therebetween, the body portion including two side plates and being formed with two guiding toothed grooves, a receiving groove being defined between the two side plates, each of the side plates being formed with a sliding groove on a face thereof facing the other side plate, the two sliding grooves being parallel to the two guiding toothed grooves; a driving handle, restrictively and slidably arranged at the two guiding toothed grooves and pivotally connected to the first clamping body by a pivot portion, the driving handle having a second handle portion at an end and a protrusion at the other end; a clamping element, including a second clamping portion and a sliding piece connected to each other, the sliding piece being received in the receiving groove and slidably arranged in the two sliding grooves, the second clamping portion corresponding to the first clamping portion, the clamping element being formed with a recess, the protrusion being rotatably inserted in the recess, the protrusion being able to drive the clamping element to slide with respect to the first clamping body by the driving handle sliding or pivoting with respect to the first clamping body; wherein the pivot portion includes an elastic element and pivot button, the driving handle is formed with a pivot hole, the pivot button has at least one restriction toothed portion, the pivot button is inserted into the pivot hole and is axially slidable between a locking position and a release position, the elastic element is biased between a stopping wall of the pivot hole and the pivot button so that the pivot button tends to move toward the locking position to be locked; wherein when the pivot button is located at the locking position, the restriction toothed portion and the two guiding toothed grooves are engaged to each other so that the driving handle is unable to slide with respect to the two guiding toothed grooves; when the pivot button is located at the release position, the restriction toothed portion is separated from the two guiding toothed grooves so that the driving handle is slidable with respect to the two guiding toothed grooves; characterized in that the two sliding grooves do not overlap the two guiding toothed grooves; and a neck portion is formed between the second clamping portion and the sliding piece, each of the side plates being formed with a flange parallel to the sliding grooves, wherein the neck portion is located between the side plates, and wherein the two flanges are slidably received in the neck portion.